Beyond Eliashberg superconductivity in MgB2: anharmonicity, two-phonon scattering, and multiple gaps

Abstract

Density-functional calculations of the phonon spectrum and electron-phonon coupling in MgB${}_2$ are presented. The $E_{2g}$ phonons, which involve in-plane B displacements, couple strongly to the $p_{x,y}$ electronic bands. The isotropic electron-phonon coupling constant is calculated to be about 0.8. Allowing for different order parameters in different bands, the superconducting $\lambda$ in the clean limit is calculated to be significantly larger. The $E_{2g}$ phonons are strongly anharmonic, and the non-linear contribution to the coupling between the $E_{2g}$ modes and the p${}_{x,y}$ bands is significant.

arXiv comment4 pages, 3 figures

References in corpus (10)

• Superconductivity of metallic boron in MgB_2
• Boron Isotope Effect in Superconducting MgB${}_2$
• Electron-phonon interaction in the normal and superconducting states of MgB2
• Superconductivity in Dense $Mg{B}_2$ Wires
• Specific Heat of Mg ^{11}B_2
• Phonon dispersion and electron-phonon coupling in MgB_2 and AlB_2
• Phonon Density-of-States in MgB2
• Tunneling spectroscopy in small grains of superconducting MgB2
• Energy Gap from Tunneling and Metallic Sharvin Contacts onto MgB2: Evidence for a Weakened Surface Layer
• Linear-Response Calculation of Electron-Phonon Coupling Parameters

Cited by in corpus (406)

• EPW: Electron-phonon coupling, transport and superconducting properties using maximally localized Wannier functions
• Electrodynamics of Correlated Electron Materials
• Enhancement of the upper critical field by nonmagnetic impurities in dirty two-gap superconductors
• Is LaO${}_{1-x}$F${}_x$FeAs an electron-phonon superconductor ?
• Anisotropic Migdal-Eliashberg theory using Wannier functions
• First-Principles Calculation of the Superconducting Transition in MgB2 within the Anisotropic Eliashberg Formalism
• Two-gap superconductivity in MgB${}_2$: clean or dirty?
• Vortices with fractional flux in two-gap superconductors and in extended Faddeev model
• Two-Band Superconductivity in MgB2
• Phenomenological two-gap model for the specific heat of MgB_2
• Multiband model for tunneling in MgB2 junctions
• Ab-initio theory of superconductivity - II: Applications to elemental metals
• Temperature and field dependence of the anisotropy of MgB2
• Vortex Imaging in the pi-Band of Magnesium Diboride
• Electronic Structure, Electron-Phonon Coupling, and Multiband Effects in MgB2
• Direct evidence for two-band superconductivity in MgB_2 single crystals from directional point-contact spectroscopy in magnetic fields
• Hidden symmetry and knot solitons in a charged two-condensate Bose system
• Three-dimensional MgB${}_2$-type superconductivity in hole-doped diamond
• High-field superconductivity in alloyed MgB2 thin films
• Probing multiband superconductivity by point-contact spectroscopy
• Ginzburg-Landau theory of vortices in a multi-gap superconductor
• Superconducting density of states and vortex cores of 2H-NbS2
• Prediction of High Tc Superconductivity in Hole-doped LiBC
• Direct evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy
• New Superconducting and Semiconducting Fe-B Compounds Predicted with an Ab Initio Evolutionary Search
• High Temperature Superfluidity in Double Bilayer Graphene
• Chiral d-wave superconductivity in doped graphene
• Band filling and interband scattering effects in MgB${}_2$: C vs Al doping
• Anisotropy of the Upper Critical Field and Critical Current in Single Crystal MgB${}_2$
• Specific heat of single crystal MgB_2: a two-band superconductor with two different anisotropies
• Limits of the upper critical field in dirty two-gap superconductors
• Carbon-substitution effect on the electronic properties of MgB${}_2$ single crystals
• Multiband model for penetration depth in MgB2
• Tellurium Hydrides at High Pressures: High-temperature Superconductors
• Prospects for Improving the Intrinsic and Extrinsic Properties of Magnesium Diboride Superconducting Strands
• Thermal conductivity of single crystalline MgB_2
• Superconducting properties of MgB2 from first principles
• Carbon doping of superconducting magnesium diboride
• Phonon dispersion and lifetimes in MgB2
• Adiabatic and non-adiabatic phonon dispersion in a Wannier function approach
• Exponential Temperature Dependence of Penetration Depth in Single Crystal MgB_2
• Evidence for complex order parameter in La_{1.83}Sr_{0.17}CuO_4
• Evidence for Two-Band Superconductivity from Break Junction Tunneling on MgB2
• Observation of Leggett's collective mode in a multi-band MgB2 superconductor
• Definitive experimental evidence for two-band superconductivity in MgB2
• Pair-breaking and superconducting state recovery dynamics in MgB2
• Properties of the superconducting state in a two-band model
• Penetration depth study of superconducting gap structure of 2\textit{H}-NbSe${}_2$
• The Superconducting Gap in MgB_2: Electronic Raman Scattering Measurements of Single Crystals
• Fermi surface topology and the upper critical field in two-band superconductors - application to MgB2
• Far-infrared optical conductivity gap in superconducting MgB2 films
• Imaging superconducting vortex core and lattice with the scanning tunneling microscope
• Mixed state of a dirty two-band superconductor: application to MgB_2
• Upper critical field in dirty two-band superconductors: breakdown of the anisotropic Ginzburg-Landau theory
• Al substitution in MgB2 crystals: influence on superconducting and structural properties
• Macroscopic anisotropy in superconductors with anisotropic gaps
• Pressure-induced Superconductivity at 32 K in MoB2
• Effects of Al doping on the structural and electronic properties of Mg(1-x)Al(x)B2
• Calorimetric Evidence of Multiband Superconductivity in Ba(Fe0.925Co0.075)2As2
• de Haas-van Alphen effect in single crystal MgB_2
• Type-1.5 superconductivity in multiband systems: the effects of interband couplings
• Type-1.5 Superconducting State from an Intrinsic Proximity Effect in Two-Band Superconductors
• Anisotropies of the lower and upper critical fields in MgB${}_2$ single crystals
• Determination of superconducting anisotropy from magnetization data on random powders as applied to LuNi${}_2$B${}_2$C, YNi${}_2$B${}_2$C and MgB${}_2$
• Anharmonic phonon frequency shift in MgB2
• Intrinsic Josephson effect and nonequilibrium soliton structures in two-gap superconductors
• Observation of the Crossover from Two-Gap to Single-Gap Superconductivity through Specific Heat Measurements in Neutron Irradiated MgB2
• Intrinsic atomic scale modulations of the superconducting gap of 2H-NbSe2
• Anisotropy of the upper critical field in superconductors with anisotropic gaps. Anisotropy parameters of MgB2
• Superconductivity in the elements, alloys and simple compounds
• Two-gap superconductivity in heavily n-doped graphene: ab initio Migdal-Eliashberg theory
• High T${}_c$ superconductivity in superhard diamond-like BC${}_5$
• Superconducting Transition and Phase Diagram of Single Crystal MgB2
• Spectroscopic Evidence for Multiple Order Parameter Components in the Heavy Fermion Superconductor CeCoIn_5
• MgB2 single crystals: high pressure growth and anisotropic properties
• Specific heat of Nb_3Sn: The case for a second energy gap
• Kohn Anomaly in MgB2 by Inelastic X-Ray Scattering
• Feshbach resonances and mesoscopic phase separation near a quantum critical point in multiband FeAs-based superconductors
• Muon Spin Rotation Measurement of the Magnetic Field Penetration Depth in Ba(Fe0.93 Co0.07)2 As2 : Evidence for Multiple Superconducting Gaps
• Topological superconducting phase in high-Tc superconductor MgB2 with Dirac-nodal-line fermions
• Two-band Eliashberg equations and the experimental Tc of the diboride Mg1-xAlxB2
• Crystal structure and lattice dynamics of AlB2 under pressure and implications for MgB2
• Thermodynamics of Two - Band Superconductors: The Case of MgB${}_2$
• Critical Field of Al-Doped MgB2 Samples: Correlation with the Suppression of Sigma-Band Gap
• Experimental evidence of two-band behavior of MgB2
• Muon-spin-relaxation study of the magnetic penetration depth in MgB2
• The Tc amplification by quantum interference effects in diborides
• Lattice dynamics and electron-phonon coupling in transition metal diborides
• Evidence for Single-gap Superconductivity in Mg(B_{1-x}C_x)_2 Single Crystals with x=0.132 from Point-Contact Spectroscopy
• Low Temperature Fabrication of MgB2
• Anisotropic resistivity and Hall effect in MgB2 single crystals
• Fully Band Resolved Scattering Rate in MgB2 Revealed by Nonlinear Hall Effect and Magnetoresistance Measurements
• Carbon-substitution dependent multiple superconducting gap of MgB${}_2$: a "sub-meV" resolution photoemission study
• Evidence of nodal gap structure in the non-centrosymmetric superconductor Y2C3
• Magnetic field dependence of the density of states in the multiband superconductor $\beta$-Bi${}_2$Pd
• Effect of two bands on critical fields in MgB2 thin films with various resistivity values
• Single crystal growth of MgB2 and thermodynamics of Mg-B-N system at high pressure
• Fermi Surfaces of Diborides: MgB2 and ZrB2
• Anisotropic s-wave superconductivity in MgB_2
• Two Bounds on the Maximum Phonon-Mediated Superconducting Transition Temperature
• Theory of light-induced resonances with collective Higgs and Leggett modes in multiband superconductors
• Determination of the Fermi Surface of MgB${}_2$ by the de Haas-van Alphen effect
• Energy gap, penetration depth and surface resistance of MgB2 thin films determined by microwave resonator mesurements
• Specific heat of MgB_2 after irradiation
• Time-resolved dynamics of the superconducting two-gap state in MgB2 thin films
• Small Fermi energy and phonon anharmonicity in MgB_2 and related compounds
• All-MgB2 Josephson tunnel junctions
• Electron-phonon coupling and phonon self-energy in MgB${}_2$: do we really understand MgB${}_2$ Raman spectra ?
• Effect of two gaps on the flux lattice internal field distribution: evidence of two length scales from muSR in Mg1-xAlxB2
• Dependence of the superconducting transition temperature of single- and polycrystalline MgB2 on hydrostatic pressure
• High $T_c$ superconductivity in MgB${}_2$ by nonadiabatic pairing
• Reflection of two-gap nature in penetration depth measurements of MgB${}_2$ film
• Systematic study of the two band/two gap superconductivity in carbon-substituted MgB2 by point-contact spectroscopy
• Interpretation of the de Haas - van Alphen experiments in MgB2
• Retention of Two-Band Superconductivity in Highly Carbon-Doped MgB2
• Spectrum of low energy excitations in the vortex state: comparison of Doppler shift method to quasiclassical approach
• Anomalous microwave conductivity coherence peak in c-axis MgB2 thin film
• Strong magnetic pair breaking in Mn substituted MgB_2 single crystals
• c-axis Raman Scattering in MgB2: Observation of a Dirty-Limit Gap in the pi-bands
• Manifestation of multiband optical properties of MgB${}_2$
• Effect of damage by 2-MeV He ions on the normal and superconducting properties of magnesium diboride
• Two band/two gap superconductivity in carbon-substituted MgB2 evidenced by point-contact spectroscopy
• Ab Initio Investigation of Collective Charge Excitations in MgB_2
• Anisotropy parameters of superconducting MgB${}_2$
• Unusual effects of anisotropy on the specific heat of ceramic and single crystal MgB2
• Pressure dependence of the upper critical field of MgB2 and of YNi2B2C
• Impurity-induced in-gap state and Tc in sign-reversing s-wave superconductors: analysis of iron oxypnictide superconductors
• Giant infrared intensity of the Peierls mode at the neutral-ionic phase transition
• First-principles Calculation of Superconductivity in Hole-doped LiBC: $T_c=65$ K
• Break-junction technique in application to layered superconductors (Review article)
• Can one extract the electron-phonon-interaction from tunneling data in case of the multigap superconductor MgB${}_2$?
• Superconductivity of magnesium diboride
• Anharmonic effects in MgB2? A comparative inelastic X-ray scattering and Raman study
• The structure of the superconducting gap in MgB2 from point-contact spectroscopy
• Critical Field of MGB2 : Crossover from Clean to Dirty Regimes
• Multi-band Superconductivity in the Chevrel Phases SnMo6S8 and PbMo6S8
• Ultrafast Hot Phonon Dynamics in MgB${}_2$ Driven by Anisotropic Electron-Phonon Coupling
• Enhancements of the superconducting transition temperature within the two-band model
• Berezinskii-Kosterlitz-Thouless transition of two-component Bose mixtures with inter-component Josephson coupling
• Electron-phonon effects on the Raman spectrum in MgB${}_2$
• Two-band Effects in the Angular Dependence of Hc2 of MgB2 Single Crystals
• Scanning Tunneling Spectroscopy on Single Crystal MgB2
• Electron-phonon coupling superconductivity in 2D orthorhombic MB6 (M=Mg, Ca) and hexagonal MB6 (M=Mg, Ca, Sc, Ti, Sr, Y)
• Free energy and torque for superconductors with different anisotropies of H_{c2} and lambda
• Point-contact spectroscopy of Al- and C-doped MgB2. Superconducting energy gaps and scattering studies
• Electron-Phonon Properties of Pnictide Superconductors
• Multi-gap superconductivity and Shubnikov-de Haas oscillations in single crystals of the layered boride OsB_2
• Break-Junction Tunneling on MgB_2
• Scanning Tunneling Spectroscopy in MgB 2
• Point-contact spectroscopy of MgB2
• Ground state, collective mode, phase soliton and vortex in multiband superconductors
• Small Fermi energy, zero point fluctuations and nonadiabaticity in MgB${}_2$
• Thermally-activated current transport in MgB_2 films
• The Magnetic-field Dependence of the Gaps in a Two-band Superconductor: A Point-contact Study of MgB_2 Single Crystals
• The road to room-temperature conventional superconductivity
• BCS-BEC crossover of collective excitations in two-band superfluids
• Surface Contribution to the Superconducting Properties of MgB2 Single Crystals
• Giant vortices, vortex rings and reentrant behavior in type-1.5 superconductors
• Superconductivity in intercalated group-IV honeycomb structures
• Strong Coupling and Double Gap Density of States in Superconducting MgB2
• The proximity effect in normal metal - multiband superconductor hybrid structures
• Physical Property Characterization of Bulk MgB2 Superconductor
• Critical Fields and Critical Currents in MgB2
• Electronic, dynamical and superconducting properties of CaBeSi
• Influence of Al doping on the critical fields and gap values in magnesium diboride single crystals
• Phonon anharmonic frequency shift induced by four-phonon scattering calculated from first principles
• Study of temperature dependent atomic correlations in MgB${}_2$
• Polaron Crossover and Bipolaronic Metal-Insulator Transition in the Holstein model at half-filling
• The effect of magnetic impurities in a two-band superconductor: A point-contact study of Mn-substituted MgB2 single crystals
• Tuning topological disorder in MgB${}_2$
• Electronic structure of MgB${}_2$: X-ray emission and absorption studies
• Systematic study of disorder induced by neutron irradiation in MgB2 thin films
• Theory of fluctuation conductivity from interband pairing in pnictide superconductors
• Dielectric functions and collective excitations in MgB_2
• Study of superconducting properties of MgB2
• Influence of carbon substitution on the heat transport in single crystalline MgB2
• Field-induced quasiparticle excitations in novel type II superconductors
• Theory of Raman scattering from Leggett's collective mode in a multiband superconductor: Application to MgB${}_2$
• High Pressure Effects on Superconductivity
• A Study of Carbon Substitutions in MgB_2 within the two-band Eliashberg theory
• Thermal conductivity of MgB${}_2$ in the superconducting state
• Crystal growth and characterization of MgB2: Relation between structure and superconducting properties
• Extreme Electron-Phonon Coupling in Boron-based Layered Superconductors
• Evidence for High-frequency Phonon Mediated S-wave Superconductivity : 11B-NMR Study of Al-doped MgB2
• Theory of fluctuations in a two-band superconductor
• Finite temperature effective field theory and two-band superfluidity in Fermi gases
• Giant electron-phonon anomaly in doped La2CuO4 and other cuprates
• Low-Energy Charge-Density Excitations in MgB${}_2$: Striking Interplay between Single-Particle and Collective Behavior for Large Momenta
• Type-1.5 superconductivity in multiband systems: magnetic response, broken symmetries and microscopic theory. A brief overview
• Order parameter symmetry in ferromagnetic superconductors
• MgB2 single crystals substituted with Li and with Li-C: Structural and superconducting properties
• Anisotropic effects in two-dimensional materials
• Quasiparticle Excitations outside the Vortex Cores in MgB${}_2$ Probed by Muon Spin Rotation
• Reversible magnetization of MgB2 single crystals with a two-gap nature
• The effect of magnetic field on the two superconducting gaps in MgB2
• MoB2 under Pressure: Superconducting Mo Enhanced by Boron
• High quality MgB2 thin films in-situ grown by dc magnetron sputtering
• NMR relaxation rates and Knight shifts in MgB2
• Surface and Image-Potential States on the MgB_2(0001) Surfaces
• Advances in point-contact spectroscopy: two-band superconductor MgB2 (A review)
• Point-contact spectroscopy in neutron-irradiated Mg^{11}B_2
• Electron-phonon coupling and pairing mechanism in $\beta$--Bi${}_2$Pd centrosymmetric superconductor
• Mixed order parameter symmetries in cuprate superconductors
• Intraband versus interband scattering rate effects in neutron irradiated MgB2
• Electron-phonon coupling in cuprate and iron-based superconductors revealed by Raman scattering
• Anisotropic type-I superconductivity and anomalous superfluid density in OsB 2
• Anharmonicity and self-energy effects of the E2g phonon in MgB2
• ${}^{11}$B and ${}^{27}$Al NMR spin-lattice relaxation and Knight shift study of Mg${}_{1-x}$Al${}_x$B${}_2$. Evidence for anisotropic Fermi surface
• Disorder induced collapse of the electron phonon coupling in MgB${}_2$ observed by Raman Spectroscopy
• Superconducting energy gap distribution in c-axis oriented MgB${}_2$ thin film from point contact study
• Multiband and impurity effects in infrared and optical spectra of MgB2
• Nonlinear microwave response of MgB2
• Nonadiabatic coupling effects in MgB${}_2$ reexamined
• Anisotropic s-wave superconductivity: comparison with experiments on MgB2 single crystals
• Role of charge doping and lattice distortions in codoped Mg_{1-x}(AlLi)_{x}B_2 compounds
• Gap Anisotropy in Multiband Superconductors Based on Multiple Scattering Theory
• Electron-phonon coupling strength from ab initio frozen-phonon approach
• Anisotropy and internal field distribution of MgB2 in the mixed state at low temperatures
• Structural and superconducting properties of MgB${}_{2-x}$Be${}_x$
• Two-phonon contributions to inelastic x-ray scattering spectra of MgB2
• Going beyond the linear approximation in describing electron- phonon coupling: relevance for the Holstein model
• Upper Critical Fields up to 60T in Dirty Magnesium Diboride Thin Films
• Penetration depth anisotropy in two-band superconductors
• Exact factorization-based density functional theory of electron-phonon systems
• Multi-Gap Superconductivity in MgB2: Magneto-Raman Spectroscopy
• Anisotropy of the superconducting state properties and phase diagram of MgB2 by torque magnetometry on single crystals
• Phonon structure in I-V characteristic of MgB${}_2$ point-contacts
• Implications of reflectance measurements on the mechanism for superconductivity in MgB${}_2$
• Superconductivity at 9K in Mo5PB2 with evidence for multiple gaps
• Superconducting energy gap in MgB2 film observed by infrared reflectance
• Electronic Thermal Conductivity of Multi-Gap Superconductors with Application to MgB_2
• Enhancing the superconducting transition temperature of BaSi2 by structural tuning
• The Maximum $T_c$ of Conventional Superconductors at Ambient Pressure
• First-principles prediction of superconductivity in MgB${}_3$C${}_3$
• Dynamical renormalization of electron-phonon coupling in conventional superconductors
• Strong electron-phonon coupling and multiband effects in the superconducting $\beta$-phase Mo${}_{1-x}$Re${}_x$ alloys
• Clean and Dirty Superconductivity in Pure, Al doped, and Neutron Irradiated MgB2: a Far-Infrared Study
• Single polaron properties for double-well electron-phonon coupling
• Superconducting properties of nanocrystalline MgB${}_2$
• Electron-phonon coupling and two-band superconductivity of Al- and C-doped MgB2
• muSR study of carbon-doped MgB2 superconductors
• Upper critical field in electron-doped cuprate superconductor Nd${}_{2-x}$Ce${}_x$CuO${}_{4+\delta }$: two-gap model
• Electron diffusivities in MgB2 from point contact spectroscopy
• Influence of Fermi surface topology on the quasiparticle spectrum in the vortex state
• Strong interaction between electrons and collective excitations in multiband superconductor MgB2
• Vibrational Modes in LiBC: Theory Compared with Experiment
• Scanning Tunneling Microscopy in the superconductor LaSb2
• Influence of Mg deficiency in MgB2 single crystals on crystal structure and superconducting properties
• Construction of a Cantilever-Andreev-Tunneling rig and its applications to superconductors
• Analytic investigation of holographic phase transitions influenced by dark matter sector
• Subharmonic gap structures and Josephson effect in MgB2/Nb micro-constrictions
• Search for E_2g phonon modes in MgB_2 single crystals by point-contact spectroscopy
• Superconductivity in 122-type antimonide BaPt${}_2$Sb${}_2$
• Investigation of Magnetic Transport Properties by Wannier Interpolation
• Point-contact Andreev-reflection spectroscopy in segregation-free Mg_{1-x}Al_{x}B_2 single crystals up to x=0.32
• Multigap Superconductivity in Chiral Noncentrosymmetric TaRh${}_2$B${}_2$
• Synthesis and Characterization of Excess Magnesium MgB2 Superconductor under Inert Carbon Environment
• Role of interband scattering in neutron irradiated MgB${}_2$ thin films by Scanning Tunneling Spectroscopy measurements
• de Haas-van Alphen effect investigation of the electronic structure of Al substituted MgB_2
• Band-filling effects on electron-phonon properties of normal and superconducting state
• Temperature Dependence of Superconducting Gaps in Mg(Al)B2 System Investigated by SnS-Andreev Spectroscopy
• Infrared properties of Mg${}_{1-x}$Al${}_x($B${}_{1-y}$C${}_y$)${}_2$ single crystals in the normal and superconducting state
• Structural and Superconducting Transitions in Mg_{1-x}Al_{x}B_2
• Transport anomalies and quantum criticality in electron-doped cuprate superconductors
• Induced Kramer-Pesch-Effect in a Two Gap Superconductor: Application to MgB2
• Locking of length scales in two-band superconductors
• Disorder effects in pnictides : a tunneling spectroscopy study
• Reversible magnetization measurement of the anisotropy of the London penetration depth in MgB2 single crystals
• Strong electron-phonon interaction in multiband superconductors
• Electronic Structure of B-2$p\sigma$ and $p\pi$ States in MgB${}_2$, AlB${}_2$ and ZrB${}_2$ Single Crystals
• Absence of a boron isotope effect in the magnetic penetration depth of MgB${}_2$
• Critical temperature of MgB${}_2$ ultrathin superconducting films: BCS model calculations in tight-binding approximation
• Probing the superconducting ground state of ZrIrSi: A $\mu$SR study
• Strongly bound yet light bipolarons for double-well electron-phonon coupling
• Fluctuation Study of the Specific Heat of MgB2
• Precise Tight-binding Description of the Band Structure of MgB2
• Suppression of fluctuations in a two-band superconductor with a quasi-1D band
• Ab initio calculations of H${}_{c2}$ for Nb, NbSe2, and MgB2
• Two-band theory of specific heat and thermal conductivity in the mixed state of MgB_2
• Local Tunneling Study of Three-Dimensional Order Parameter in the $\pi$-band of Al-doped MgB${}_2$ Single Crystals
• Measuring the Penetration Depth Anisotropy in MgB${}_2$ using Small-Angle Neutron Scattering
• Damping of the de Haas-van Alphen oscillations in the superconducting state of MgB_2
• Mn and Fe Impurities in MgB_{2}
• Superconductivity and the upper critical field in the chiral noncentrosymmetric superconductor NbRh${}_2$B${}_2$
• Thermoelectric power of MgB${}_{2-x}$Be${}_x$
• A functional approach to the electronic and bosonic dynamics of many-body systems perturbed with an arbitrary strong electron-boson interaction
• Modification of intergrain connectivity, upper critical field anisotropy, and critical current density in ion irradiated MgB2 films
• Lessons from Oxypnictide Thin Films
• First Order Bipolaronic Transition at Finite Temperature in the Holstein Model
• Weak inter-band coupling in Mg${}^{10}$B${}_2$: a specific heat analysis
• de Haas-van Alphen effect investigations of the electronic structure of pure and aluminum-doped MgB_2
• De Haas-van Alphen effect and Fermi surface properties of single crystal CrB2
• Effects of the Two- Gap Nature on the Microwave Conductivity of 39 K Polycrystalline MgB2 Films
• Contribution of Collective Excitations to Third Harmonic Generation in Multiband Superconductors: the case of MgB${}_2$
• Transfer-matrix approach to multiband Josephson junctions
• Effects of phonon interaction on the pairing in the high-T$c$ superconductors
• Effect of density of state on isotope effect exponent of two-band superconductors
• Upper critical fields of MgB2 thin films
• Independent determination of the two gaps by directional point-contact spectroscopy in MgB_2 single crystals
• Magnetic monopoles in a charged two-condensate Bose-Einstein system
• Point-Contact Spectroscopy in MgB_2: from Fundamental Physics to Thin-Film Characterization
• Tunnel junctions on as-grown superconducting MgB2 thin films
• Study of pressure effect on the magnetic penetration depth in MgB${}_2$
• Shape resonances and shell effects in thin-film multiband superconductors
• Probing the electron-phonon coupling in MgB2 through magnetoresistance measurements in neutron irradiated thin films
• Systematic characterization of upper critical fields for MgB${}_2$ thin films using the two-band superconducting theory
• Theory of vortices in hybridized ballistic/diffusive-band superconductors
• Type-1.5 superconductivity in two-band systems
• Pressure dependence of critical temperature in MgB2 and two bands Eliashberg theory
• Dual Superconductors and SU(2) Yang-Mills
• Complicated nature of the gap in MgB2: magnetic field-dependent optical studies
• Temperature and junction-type dependency of Andreev reflection in MgB2
• Flux flow resistivity in the two-gap superconductivity
• Multigap superconductivity and interaction driven resonances in superconducting nanofilms with an inner potential barrier
• Interorbital pair scattering in clean and impure superconductors
• Prediction of Van Hove singularity systems in ternary borides
• Stability-superconductivity map for compressed Na-intercalated graphite
• Ginzburg-Landau theory of the superheating field anisotropy of layered superconductors
• Edge effect and significant increase of the superconducting transition onset temperature of 2D superconductors in flat and curved geometries
• MgB2 and Mg1-xAlxB2 single crystals: high-pressure growth and physical properties
• Bound State and Order Parameter Mixing Effect by Nonmagnetic Impurity Scattering in Two-band Superconductors
• Type-1.5 superconductivity in muliband and other multicomponent systems
• Impact of disorder on the superconducting transition temperature near a Lifshitz transition
• Multiband superconductivity in Pb, H under pressure and CaBeSi from {\it ab-initio} calculations
• Anisotropic normal-state properties of the MgB2 superconductor
• Magnetotransport and the upper critical magnetic field in MgB2
• Hole-doped, High-Temperature Superconductors Li_{x}BC, Na_{x}BC and C_{x} : A Coherent-Potential-Based Prediction
• Interband electron pairing for superconductivity from the breakdown of the Born-Oppenheimer approximation
• Knotted Solitons in a Charged Two-Condensate Bose System
• Possible superlattice formation in high-temperature treated carbonaceous MgB2 at elevated pressure
• Isotope Effect on Electron-Phonon Interaction in Multiband Superconductor MgB2
• Origin of the pressure-dependent T${}_c$ valley in superconducting simple cubic phosphorus
• Magnetic Field Induced Density of States in Superconducting MgB${}_2$: Measurement of Conduction Electron Spin-Susceptibility
• Anisotropic, Fermi-Surface-Induced Variation in T_c in MgB_2 Alloys
• Ballistic and diffusive: theory of vortices in the two-band superconductor MgB2
• Neon ion Irradiation studies on MgB2 Superconductor
• A first-principles investigation of the origin of superconductivity in TlBi${}_2$
• Superconducting gap structure and pinning in disordered MgB2 films
• Spectroscopic signatures of phonons in high pressure superconducting hydrides
• Superconductivity in two-band systems with variable charge carrier density. The case of MgB2
• Heat capacity of mesoscopically disordered superconductors:implications to MgB${}_2$
• Experimental confirmation of the low B isotope coefficient in MgB2
• Self-consistent theory of phonon renormalization and electron-phonon coupling near a 2D Kohn singularity
• On the interband pairing in doped graphane
• Electronic structure of single-crystalline Mg${}_x$Al${}_{1-x}$B${}_2$ probed by x-ray diffraction multipole refinements and polarization-dependent x-ray absorption spectroscopy
• Multiband superconductors close to a 3D-2D electronic topological transition
• Raman scattering from a superconductivity-induced bound state in $Mg{B}_2$
• Fluxon Dynamics of a Long Josephson Junction with Two-gap Superconductors
• Poor screening and nonadiabatic superconductivity in correlated systems
• Features of Excess Conductivity Behavior in a Magnetic Superconductor Dy${}_{0.6}$Y${}_{0.4}$Rh${}_{3.85}$Ru${}_{0.15}$B${}_4$
• Nonmagnetic impurity effects in MgB${}_2$
• Strong Landau-quantization effects in high-magnetic-field superconductivity of a two-dimensional multiple-band metal near the Lifshitz transition
• Unveiling a Family of Dimerized Quantum Magnets in Ternary Metal Borides
• Microwave surface resistance of pristine and neutron-irradiated MgB2 samples in magnetic field
• Response Theory of the Electron-Phonon Coupling
• Effect of interband interactions of phonon and charge fluctuation on superconducting parameters of MgB2
• Current-loops, phase transitions, and the Higgs mechanism in Josephson-coupled multi-component superconductors
• Optical Conductivity in a Two-Band Superconductor: Pb
• Universal Non-Landau, Self-Organized, Lattice Disordering Percolative Dopant Network Sub-Tc Phase Transitions in Ceramic Superconductors
• Study of the electron-phonon interaction in metal diborides MeB_2 (Me=Zr, Nb, Ta, Mg) by point-contact spectroscopy
• Spectroscopic signature of two superconducting gaps and their unusual field dependence in RuB${}_2$
• Fingerprints of hot-phonon physics in time-resolved correlated quantum lattice dynamics
• Strong electron-phonon coupling in 3D tungsten nitride and coexistence of intrinsic superconductivity and topological nodal line in its 2D limit
• Lattice Anharmonicity in BiS2-Based Layered Superconductor RE(O,F)BiS2 (RE = La, Ce, Pr, Nd)
• Band filling and disorder effects on the normal state thermoelectric behavior in MgB2
• Stochastic path-integral approach for predicting the superconducting temperatures of anharmonic solids
• ${}^{11}$B NMR study of pure and lightly carbon doped MgB${}_2$ superconductors
• Field dependence of the vortex-core sizes in dirty two-band superconductors
• Correlation between Superconducting Carrier Density and Transition Temperature in NbB${}_{2+x}$
• Superconductivity of Magnesium Diboride: Theoretical Aspects
• Effect of inelastic scattering on the nuclear magnetic relaxation rate 1/T1T in iron-based superconductors
• High-pressure high-temperature solution growth, structural, and superconducting properties of Fe-substituted MgB2 single crystals
• Strong electron-phonon coupling and phonon-induced superconductivity in tetragonal C${}_3$N${}_4$ with hole doping
• Anharmonic effects in magnetoelastic chains
• The determination of the electron-phonon interaction from tunneling data in the two-band superconductor MgB2
• Unconventional phonon-mediated superconductivity in MgB_{2}
• Topological Theory of Ceramic High Temperature Superconductors
• Broken Time-reversal Symmetry in Josephson Junction with an Anderson impurity and multi band superconductors
• Electron-mediated anharmonicity and its role in the Raman spectrum of graphene
• Magnetic behaviour of dirty multiband superconductors near the upper critical field
• Hump Structure below Tc in the thermal conductivity of MgB2 superconductor
• Directional point-contact spectroscopy of MgB2 single crystals in magnetic fields: two-band superconductivity and critical fields
• Transition Spectra for a BCS Superconductor with Multiple Gaps: Model Calculations for MgB_2
• Is Delta_{pi}-gap-only superconductivity possible in Mg_{1-x}Al_{x}B_{2} and Mg(B_{1-y}C_{y})_{2} alloys?
• Flux quantization for a vortex in two-gap superconductor
• Why band theorists have been so successful in explaining and predicting novel superconductors?
• Vortex-lattice melting in magnesium diboride in terms of the elastic theory
• Quasiclassical Theory for Thermodynamic Properties of the Two-Band Superconductor MgB${}_2$ under Magnetic Fields
• Superconducting energy gaps, low temperature specific heat, and quasiparticle spectra of MgB2
• Differential Conductance Measurements of MgB2-Based Josephson Junctions Below 1 Kelvin
• Temperature and field dependence of MgB2 energy gaps from tunneling spectra
• Decoupled interband pairing in a bilayer iron-based superconductor evidenced by ultrahigh-resolution ARPES
• Robust $s\pm$ Superconductivity in a Two-Band Hubbard-Fr{ö}hlich Model of Alkali Doped Organics
• Electronic conductivity in anharmonic crystals: Phonon dephasing in the electron-phonon interaction
• Thermal resonating Hartree-Bogoliubov theory based on the projection method
• A model Hamiltonian for MgB2 which takes into account its unusual phononic features
• Overscreening-free electron-phonon interaction in realistic materials
• Properties and challenges of hot-phonon physics in metals: MgB${}_2$ and other compounds
• Thermal properties of MgB2: the effect of disorder on gap amplitudes and relaxation times of p and s bands
• Three-Body Collective Excitations in the Superconducting Phase of $Mg{B}_2$
• Ginzburg-Landau surface energy of multiband superconductors: Derivation and application to selected systems
• Pressure induced evolution of anisotropic superconductivity and Fermi surface nesting in a ternary boride
• Quantifying proximity-induced superconductivity from first-principles calculations
• First-principles evidence for conventional superconductivity in a quasicrystal approximant
• Point-contact spectroscopy of magnesium diboride with different counter-electrodes
• Enhancing long-range order in disordered two-band s-wave superconductors