Phase Diagram and High Temperature Superconductivity at 65 K in Tuning Carrier Concentration of Single-Layer FeSe Films

Abstract

Superconductivity in the cuprate superconductors and the Fe-based superconductors is realized by doping the parent compound with charge carriers, or by application of high pressure, to suppress the antiferromagnetic state. Such a rich phase diagram is important in understanding superconductivity mechanism and other physics in the Cu- and Fe-based high temperature superconductors. In this paper, we report a phase diagram in the single-layer FeSe films grown on SrTiO3 substrate by an annealing procedure to tune the charge carrier concentration over a wide range. A dramatic change of the band structure and Fermi surface is observed, with two distinct phases identified that are competing during the annealing process. Superconductivity with a record high transition temperature (Tc) at ~65 K is realized by optimizing the annealing process. The wide tunability of the system across different phases, and its high-Tc, make the single-layer FeSe film ideal not only to investigate the superconductivity physics and mechanism, but also to study novel quantum phenomena and for potential applications.

15 pages, 4 figures

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Cited by in corpus (362)

• Superconductivity in single-layer films of FeSe with a transition temperature above 100 K
• Universal mechanical exfoliation of large-area 2D crystals
• Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3
• Interface-induced superconductivity and strain-dependent spin density wave in FeSe/SrTiO3 thin films
• Highly crystalline 2D superconductors
• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• High Temperature Superconductivity in Iron Pnictides and Chalcogenides
• Enhanced superconductivity in atomically thin TaS2
• Structure determination and coexistence of superconductivity and antiferromagnetic order in (Li0.8Fe0.2)OHFeSe
• Orbital-driven nematicity in FeSe
• Exploration of new superconductors and functional materials and fabrication of superconducting tapes and wires of iron pnictides
• Enhancement of superconductivity near a nematic quantum critical point
• Direct observation of high temperature superconductivity in one-unit-cell FeSe films
• Dome-shaped magnetic order competing with high-temperature superconductivity at high pressures in FeSe
• Evolution of high-temperature superconductivity from low-Tc phase tuned by carrier concentration in FeSe thin flakes
• Angle-resolved photoemission spectroscopy and its application to topological materials
• Phonon-enhanced superconductivity at the FeSe/SrTiO3 interface
• Electric-field-induced superconductivity in electrochemically-etched ultrathin FeSe films on SrTiO3 and MgO
• Unconventional Superconductivity
• Critical role of substrate in the high temperature superconductivity of single layer FeSe on Nb:BaTiO${}_3$
• Iron based high transition temperature superconductors
• Common Electronic Origin of Superconductivity in (Li,Fe)OHFeSe Bulk Superconductor and Single-Layer FeSe/SrTiO3 Films
• Interface induced high temperature superconductivity in single unit-cell FeSe films on SrTiO3(110)
• Unusual band renormalization in the simplest iron based superconductor
• Monolayer FeSe on SrTiO${}_3$
• Anomalous correlation effects and unique phase diagram of electron doped FeSe revealed by angle resolved photoemission spectroscopy
• Using Gap Symmetry and Structure to Reveal the Pairing Mechanism in Fe-based Superconductors
• Plain s-wave superconductivity in single-layer FeSe on SrTiO3 probed by scanning tunneling microscopy
• Enhanced superconductivity by strain and carrier-doping in borophene: A first principles prediction
• (Li0.84Fe0.16)OHFe0.98Se superconductor: Ion-exchange synthesis of large single crystal and highly two-dimensional electron properties
• Enhanced superconductivity and evidence for novel pairing in single-layer FeSe on SrTiO3 thin film under large tensile strain
• Electronic Structure and Superconductivity of FeSe-Related Superconductors
• On the Remarkable Superconductivity of FeSe and its Close Cousins
• Momentum-dependent sign-inversion of orbital polarization in superconducting FeSe
• Fe-based superconductors: seven years later
• Surface electronic structure and isotropic superconducting gap in (Li${}_{0.8}$Fe${}_{0.2}$)OHFeSe
• Two-dimensional Superconductors with Atomic-scale Thicknesses
• Enhanced superconductivity due to forward scattering in FeSe thin films on SrTiO3 substrates
• Observation of Double-Dome Superconductivity in Potassium-Doped FeSe Thin Films
• High temperature superconducting FeSe films on SrTiO3 substrates
• Strain-stabilized superconductivity
• Superconducting gap anisotropy in monolayer FeSe thin film
• Universal Substrate Effect on the Superconductivity of FeSe Monolayer Films
• High-temperature superconductivity in single-unit-cell FeSe films on anatase TiO2(001)
• Ultrafast Dynamics Evidence of High Temperature Superconductivity in Single Unit Cell FeSe on SrTiO3
• Temperature dependence of lower critical field Hc1(T) shows nodeless superconductivity in FeSe
• Origin of charge transfer and enhanced electron-phonon coupling in single unit-cell FeSe films on SrTiO3
• What makes the Tc of monolayer FeSe on SrTiO3 so high: a sign-problem-free quantum Monte Carlo study
• Onset of the Meissner effect at 65 K in FeSe thin film grown on Nb doped SrTiO3 substrate
• The Role of SrTiO3 Phonon Penetrating into thin FeSe Films in the Enhancement of Superconductivity
• Pressure-induced antiferromagnetic transition and phase diagram in FeSe
• Superconducting single-layer T-graphene and novel synthesis routes
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• Tuning phase transitions of FeSe thin flakes by field effect transistor with solid ion conductor as gate dielectric
• Enhanced superconductivity accompanying a Lifshitz transition in electron-doped FeSe monolayer
• Electron pairing in the presence of incipient bands in iron-based superconductors
• Dynamics and mechanism of oxygen annealing in Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$ single crystal
• Large electron-phonon interactions from FeSe phonons in a monolayer
• Theory of Cross Phenomena and Their Coefficients Beyond Onsager Theorem
• Interface enhanced electron-phonon coupling and high temperature superconductivity in potassium-coated ultra-thin FeSe films on SrTiO3
• Interatomic Coulomb interaction and electron nematic bond order in FeSe
• Scrutinizing the double superconducting gaps and strong coupling pairing in (Li1-xFexOH)FeSe
• Optical manipulation of electronic dimensionality in a quantum material
• Fe-vacancy order and superconductivity in PbO-type tetragonal β-Fe1-xSe
• Dynamic interfacial polaron enhanced superconductivity of FeSe/SrTiO3
• The Nematic Energy Scale and the Missing Electron Pocket in FeSe
• Electronic Evidence of an Insulator-Superconductor Transition in Single-Layer FeSe/SrTiO3 Films
• Topological quantum states of matter in iron-based superconductors: From concepts to material realization
• Topological Phases in the Single-Layer FeSe
• Antiferromagnetic ground state with pair-checkboard order in FeSe
• Quantum-Matter Heterostructures
• High-temperature superconductivity in one-unit-cell FeSe films
• Strong Correlations, Strong Coupling and s-wave Superconductivity in Hole-doped BaFe2As2 Single Crystals
• Review of annealing effects and superconductivity in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ superconductors
• Dichotomy of Electronic Structure and Superconductivity between Single-Layer and Double-Layer FeSe/SrTiO3 Films
• Strain induced superconductivity in the parent compound BaFe2As2
• Multiband Effect and Possible Dirac Fermions in Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$
• A comprehensive review on topological superconducting materials and interfaces
• Discrete superconducting phases in FeSe-derived superconductors
• The intercalation chemistry of layered iron chalcogenide superconductors
• Preformed Cooper pairs in layered FeSe-based superconductors
• Observation of high-Tc superconductivity in rectangular FeSe/STO(110) monolayer
• Extraordinary quasiparticle scattering and bandwidth-control by dopants in iron-based superconductors
• Superconducting Properties of the $s^{\pm }$-wave state: Fe-based superconductors
• All-electrically tunable networks of Majorana bound states
• Atomically Resolved FeSe/SrTiO3(001) Interface Structure by Scanning Transmission Electron Microscopy
• High Tc via spin fluctuations from incipient bands: application to monolayers and intercalates of FeSe
• Interface high-temperature superconductivity
• Superconductivity from orbital nematic fluctuations
• Enhancement of Tc by point-like disorder and anisotropic gap in FeSe
• The interfacial effects on the spin density wave in FeSe/SrTiO3 thin film
• The vital role of hole-carriers for superconductivity in pressurized black phosphorus
• Superconductivity in FeSe thin films driven by the interplay between nematic fluctuations and spin-orbit coupling
• Incoherent Cooper pairing and pseudogap behavior in single-layer FeSe/SrTiO${}_3$
• Surface electronic structure and evidence of plain s-wave superconductivity in (Li0.8Fe0.2)OHFeSe
• Probe of Spin Dynamics in Superconducting NbN Thin Films via Spin Pumping
• Electron phonon coupling versus photoelectron energy loss at the origin of replica bands in photoemission of FeSe on SrTiO${}_3$
• Pressure-induced high-temperature superconductivity retained at ambient
• Superconductivity dichotomy in K-coated single and double unit cell FeSe films on SrTiO3
• Suppression of superconductivity and enhanced critical field anisotropy in thin flakes of FeSe
• Synergetic Behavior in 2D Layered Material/Complex Oxide Heterostructures
• Spectroscopic Evidence of Superconductivity Pairing at 83 K in Single-Layer FeSe/SrTiO3 Films
• Observation of Dirac Cone Band Dispersion in FeSe Thin Films by Photoemission Spectroscopy
• Oxygen Vacancy Induced Flat Phonon Mode at FeSe /SrTiO3 interface
• 20 K superconductivity in heavily electron doped surface layer of FeSe bulk crystal
• Thickness dependence of superconductivity and superconductor-insulator transition in ultrathin FeSe films on SrTiO3(001) substrate
• Superconductor-insulator transitions: Phase diagram and magnetoresistance
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• Gated Tuned Superconductivity and Phonon Softening in Mono- and Bilayer MoS${}_2$
• The role of double TiO2 layers at the interface of FeSe/SrTiO3 superconductors
• Antiferromagnetic order in epitaxial FeSe films on SrTiO3
• A balancing act: Evidence for a strong subdominant d-wave pairing channel in $\mathrm{B}{\mathrm{a}}_{0.6}{\mathrm{K}}_{0.4}\mathrm{F}{\mathrm{e}}_2\mathrm{A}{\mathrm{s}}_2$
• Ab initio Study of Cross-Interface Electron-Phonon Couplings in FeSe Thin Films on SrTiO${}_3$ and BaTiO${}_3$
• Observation of topological transition in high-T${}_c$ superconductor FeTe${}_{1-x}$Se${}_x$/SrTiO${}_3$(001) monolayers
• Orbital-selective metal-insulator transition and gap formation above Tc in superconducting Rb1-xFe2-ySe2
• Impurities in multiband superconductors
• Nodeless high-T${}_c$ superconductivity in highly-overdoped monolayer CuO${}_2$
• Odd and even modes of neutron spin resonance in the bilayer iron-based superconductor CaKFe${}_4$As${}_4$
• Metamorphoses of electronic structure of FeSe-based superconductors (Review article)
• Do Se vacancies electron dope monolayer FeSe?
• Photo-induced Superconducting State with Long-lived Disproportionate Band Filling in FeSe
• Optical conductivity of iron-based superconductors
• Evolution from incoherent to coherent electronic states and its implications to superconductivity in FeTe1-xSex
• Multiband full-bandwidth anisotropic Eliashberg theory of interfacial electron-phonon coupling and high-T${}_c$ superconductivity in FeSe/SrTiO${}_3$
• Orbital selectivity in electron correlations and superconducting pairing of iron-based superconductors
• Effective pairing interaction in a system with an incipient band
• Coexistence of low moment magnetism and superconductivity in tetragonal FeS and suppression of $T_{\mathrm{c}}$ under pressure
• Imaging the Electron-Boson Coupling in Superconducting FeSe
• ARPES measurements of the superconducting gap of Fe-based superconductors and their implications to the pairing mechanism
• Frustrated magnetism in tetragonal CoSe, analogue to superconducting FeSe
• Orbital-selective superconductivity in the nematic phase of FeSe
• Enhanced Superconducting Transition Temperature due to Tetragonal Domains in Two-Dimensionally Doped SrTiO${}_3$
• Spectromicroscopy of electronic phase separation in K${}_x$Fe${}_{2-y}$Se${}_2$ superconductor
• A general group theoretical method to unfold band structures and its application
• Superconductivity and Nematic Fluctuations in a model of FeSe monolayers: A Determinant Quantum Monte Carlo Study
• Enhancement of Transition Temperature in FexSe0.5Te0.5 Film via Iron Vacancies
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• The preparation and phase diagrams of (${}^7$Li${}_{1-x}$Fe${}_x$OD)FeSe and (Li${}_{1-x}$Fe${}_x$OH)FeSe superconductors
• Aspects of electron-phonon interactions with strong forward scattering in FeSe Thin Films on SrTiO${}_3$ substrates
• Mapping the Electronic Structure of Each Ingredient Oxide Layer of High-$T_{\text{c}}$ Cuprate Superconductor Bi2Sr2CaCu2O8+δ
• Fragile topologically flat band in the checkerboard antiferromagnetic monolayer FeSe
• s${}_{\pm }$ pairing near a Lifshitz transition
• Dipolar phonons and electronic screening in monolayer FeSe on SrTiO${}_3$
• Observation of discrete conventional Caroli-de Gennes-Matricon states in the vortex core of single-layer FeSe/SrTiO3
• Superfluid density and microwave conductivity of FeSe superconductor: ultra-long-lived quasiparticles and extended s-wave energy gap
• Strong and nonmonotonic temperature dependence of Hall coefficient in superconducting K${}_x$Fe${}_{2-y}$Se${}_2$ single crystals
• Topological superconducting states in monolayer FeSe/SrTiO${}_3$
• Superconducting (Li, Fe)OHFeSe film of high quality and high critical parameters
• Incommensurate smectic phase in close proximity to the high-Tc superconductor FeSe/SrTiO3
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• Topological Nonsymmorphic Crystalline Superconductors
• Evidence for d-wave superconductivity in single layer FeSe/SrTiO3 probed by quasiparticle scattering off step edges
• Phonon anomalies in FeS
• Construction and classification of point group symmetry protected topological phases in 2D interacting fermionic systems
• The magnetic moment enigma in Fe-based high temperature superconductors
• Strongly enhanced temperature dependence of the chemical potential in FeSe
• Flux-free growth of large superconducting crystal of FeSe by traveling-solvent floating-zone technique
• Dichotomy of superconductivity between monolayer FeS and FeSe
• Evolution of Superconductivity in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ Annealed in Te Vapor
• Lattice Dynamics of Ultrathin FeSe Films on SrTiO3
• Detection of bosonic mode as a signature of magnetic excitation in one unit cell FeSe on SrTiO3
• Decoupling carrier concentration and electron-phonon coupling in oxide heterostructures observed with resonant inelastic x-ray scattering
• Nematicity and in-plane anisotropy of superconductivity in $\beta$-FeSe detected by ${}^{77}$Se nuclear magnetic resonance
• Simultaneous emergence of superconductivity, inter-pocket scattering and nematic fluctuation in potassium-coated FeSe superconductor
• What Tc Tells
• Macroscopic Manifestation of Domain-wall Magnetism and Magnetoelectric Effect in a Néel-type Skyrmion Host
• Mapping Dynamical Magnetic Responses of Ultra-thin Micron-size Superconducting Films using Nitrogen-vacancy Centers in Diamond
• Quantum geometric effect on Fulde-Ferrell-Larkin-Ovchinnikov superconductivity
• Highly textured oxypnictide superconducting thin films on metal substrates
• Protonation-induced discrete superconducting phases in bulk FeSe single crystals
• Eliashberg theory for spin-fluctuations mediated superconductivity -- Application to bulk and monolayer FeSe
• Heterostructural one-unit-cell FeSe/SrTiO3: from high-temperature superconductivity to topological states
• Superconductivity in monolayer FeSe enhanced by quantum geometry
• Weakening of the diamagnetic shielding in FeSe${}_{1-x}$S${}_x$ at high pressures
• Low-energy spin excitations in Li(0.8)Fe(0.2)ODFeSe superconductor studied with inelastic neutron scattering
• Understanding doping, vacancy, lattice stability and superconductivity in KxFe2-ySe2
• Nodal superconductivity in FeS: Evidence from quasiparticle heat transport
• An extensive impurity-scattering study on the pairing symmetry of monolayer FeSe films on SrTiO3
• Critical current density and vortex pinning in tetragonal FeS${}_{1-x}$Se${}_x$ ($x=0,0.06$)
• The influence of spin-phonon coupling on antiferromagnetic spin fluctuations in FeSe under pressure: the First-principles calculations with van der Waals corrections
• Quasiparticle Excitations in the Superconducting State of FeSe Probed by Thermal Hall Conductivity in the Vicinity of the BCS-BEC Crossover
• Thickness-Dependent Coherent Phonon Frequency in Ultrathin FeSe/SrTiO${}_3$ Films
• Perspective: Heusler interfaces -- opportunities beyond spintronics?
• Tuning stoichiometry and its impact on superconductivity of monolayer and multilayer FeSe on SrTiO3
• Superconductivity and Dirac Fermions in 112-phase Pnictides
• Magnetic fluctuations and spin-spirals in single-layer FeSe
• First-principles study of magnetic frustration in FeSe epitaxial films on SrTiO${}_3$
• Quantum Unfolding: A program for unfolding electronic energy bands of materials
• Temperature-Dependent Electron-Electron Interaction in Graphene on SrTiO3
• Absence of superconductivity in ultra-thin layers of FeSe synthesized on a topological insulator
• Pairing Mechanism of the Heavily Electron Doped FeSe Systems: Dynamical Tuning of the Pairing Cutoff Energy
• Electronic structure of Bi2Te3/FeTe heterostructure: implications for unconventional superconductivity
• In situ monitoring of atomic layer epitaxy via optical ellipsometry
• Superconductivity in Undoped BaFe2As2 by Tetrahedral Geometry Design
• Many-variable variational Monte-Carlo study of superconductivity in two-band Hubbard models with an incipient band
• Achieving the depairing limit along $c$ axis in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ single crystals
• Molecular Beam Epitaxy Growth of Superconducting LiFeAs Film on SrTiO3(001) Substrate
• Spin Fluctuation Induced Linear Magnetoresistance in Ultrathin Superconducting FeSe Films
• Superconducting monolayer deposited on substrate: effects of the spin-orbit coupling induced by proximity effects
• Unconventional pairing in single FeSe layers
• Self-consistent temperature dependence of quasiparticle bands in monolayer FeSe on SrTiO${}_3$
• Prediction of superconductivity and topological aspects in single-layer $\beta$-Bi${}_2$Pd
• Antiferroquadrupolar order and rotational symmetry breaking in a generalized bilinear-biquadratic model on a square lattice
• Observation of an electron band above the Fermi level in FeTe${}_{0.55}$Se${}_{0.45}$ from \emph{in-situ} surface doping
• Proposal for a bulk material based on a monolayer FeSe on SrTiO3 high-temperature superconductor
• Electronic and phononic properties of a two dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering
• Canted Antiferromagnetism in the Quasi-1D Iron Chalcogenide BaFe${}_2$Se${}_4$
• Origin of Pressure-induced Superconducting Phase in K${}_x$Fe${}_{2-y}$Se${}_2$ studied by Synchrotron X-ray Diffraction and Spectroscopy
• Bounds on Nanoscale Nematicity in Single-Layer FeSe/SrTiO${}_3$
• Phonon linewidth due to electron-phonon interactions with strong forward scattering in FeSe thin films on oxide substrates
• Universal bound to the amplitude of the vortex Nernst signal in superconductors
• Direct evidence of superconductivity and determination of the superfluid density in buried ultrathin FeSe grown on SrTiO${}_3$
• Intrinsic interfacial van der Waals monolayers and their effect on the high-temperature superconductor FeSe/SrTiO${}_3$
• Two-dimensional CoSe structures: Intrinsic magnetism, strain-tunable anisotropic valleys, magnetic Weyl point, and antiferromagnetic metal state
• Tunable Fe-vacancy disorder-order transition in FeSe thin films
• An Integrated Quantum Material Testbed with Multi-Resolution Photoemission Spectroscopy
• Neutron Scattering Measurements of Spatially Anisotropic Magnetic Exchange Interactions in Semiconducting K0.85Fe1.54Se2 (TN=280 K)
• Correlation Driven Phonon Anomalies in Bulk FeSe
• Resonant pair-exchange scattering and BCS-BEC crossover in a system composed of dispersive and heavy incipient bands: a Feshbach analogy
• Giant biquadratic interaction induced magnetic anisotropy in the iron-based superconductor AxFe2-ySe2
• Intertwined spin-orbital coupled orders in the iron-based superconductors
• Phonon Boost Effect on the $S^{\pm }$-wave Superconductor with Incipient Band
• Band structure and charge doping effects of potassium-adsorbed FeSe/SrTiO3 system
• Synthesis, phase stability, structural and physical properties of 11-type iron chalcogenides
• Chemical composition control at the substrate interface as the key for FeSe thin film growth
• Topological magnetic order and superconductivity in EuRbFe${}_4$As${}_4$
• Multichannel superconductivity of monolayer FeSe on SrTiO${}_3$: Interplay of spin fluctuations and electron-phonon interaction
• Superconducting FeSe monolayer with milli-electron volt Fermi energy
• Strain effects in monolayer Iron-Chalcogenide superconductors
• Soft phonons in the interface layer of the STO substrate can explain high temperature superconductivity in one unit cell FeSe
• Impact of Spatial Dimension on Structural Ordering in Metallic Glass
• Effects of interface oxygen vacancies on electronic bands of FeSe/SrTiO3(001)
• Interface superconductivity in FeSe thin films on SrTiO${}_3$grown by the PLD technique
• Superconductivity in 2D electron gas induced by high energy optical phonon mode and large polarization of the STO substrate
• Comparative study of superconducting and normal-state anisotropy in Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$ superconductors with controlled amounts of interstitial excess Fe
• Band structure reconstruction across nematic order in high quality FeSe single crystal as revealed by optical spectroscopy study
• Realization of continuously electron doping in bulk iron selenides and identification of a new superconducting zone
• Twisted-bilayer FeSe and the Fe-based superlattices
• Complex biphase nature of the superconducting dome of the FeSe phase diagram
• Frustrated Magnetism from Local Moments in FeSe
• Enhanced superconductivity in FeSe/SrTiO${}_3$ from the combination of forward scattering phonons and spin fluctuations
• Is BaCr${}_2$As${}_2$ symmetrical to BaFe${}_2$As${}_2$ with respect to half $3d$ shell filling?
• Crystal structure instability of FeSe grains: Formation of non-superconducting phase at the grain surface
• Step-edge assisted large scale FeSe monolayer growth on epitaxial Bi2Se3 thin films
• Two-dimensional spinodal interface in one-step grown graphene-molybdenum carbide heterostructures
• Direct probing of a large spin-orbit coupling in the FeSe superconducting monolayer on STO: Evidence for nontrivial topological states
• Coexistence of magnetism and superconductivity in separate layers of the iron-based superconductor Li_{1-x}Fe_{x}(OH)Fe_{1-y}Se
• Superconducting transition of FeSe/SrTiO3 induced by adsorption of semiconducting organic molecules
• Three superconducting phases with different categories of pairing in hole- and electron-doped LaFeAs${}_{1-x}$P${}_x$O
• Realization of epitaxial thin films of the superconductor K-doped BaFe${}_{\text{2}}$As${}_{\text{2}}$
• Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates
• Inverse proximity effect in $s$-wave and $d$-wave superconductors coupled to topological insulators
• Pure nematic state in iron-based superconductor
• Positive and negative chemical pressure effects investigated in electron-doped FeSe films with an electric-double-layer structure
• Electronic structure and nematic phase transition in superconducting multi-layer FeSe films grown by pulsed laser deposition method
• Electronic properties of the FeSe/STO interface from first-principle calculations
• Superconductivity enhanced by pair fluctuations between wide and narrow bands
• Probing the superconducting gap structure of (Li${}_{1-x}$Fe${}_x$)OHFeSe
• Structure of the pairing gap from orbital nematic fluctuations
• Identification of a Large Amount of Excess Fe in Superconducting Single-Layer FeSe/SrTiO3 Films
• The Coulomb problem in iron based superconductors
• Tuning vortex fluctuations and the resistive transition in superconducting films with a thin overlayer
• The study of intrinsic defect state of FeSe with scanning tunneling microscopy
• Thermodynamic electric quadrupole moments of nematic phases from first-principles calculation
• Stoichiometry and defect superstructures in epitaxial FeSe films on SrTiO3
• Evidence for an Additional Symmetry Breaking from Direct Observation of Band Splitting in the Nematic State of FeSe Superconductor
• Hidden sign-changing $s$-wave superconductivity in monolayer FeSe
• Insulator-like behavior coexisting with metallic electronic structure in strained FeSe thin films grown by molecular beam epitaxy
• Frustrated magnetic interactions in FeSe
• Electronic structure and signature of Tomonaga-Luttinger liquid state in epitaxial CoSb${}_{1-x}$ nanoribbons
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• Details of the disorder-induced transition between $s_{\pm }$ and $s_{++}$ states in two-band model for Fe-based superconductors
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• Cometal addition effect on superconducting properties and granular behaviours of polycrystalline FeSe0.5Te0.5
• Large spin splitting and piezoelectricity in a two-dimensional topological insulator Al${}_2$SbBi with double-layer honeycomb structure
• High-$T_c$ Berezinskii-Kosterlitz-Thouless transition in 2D superconducting systems with coupled deep and quasi-flat electronic bands with van Hove singularities
• Fermi surface pockets in electron-doped iron superconductor by Lifshitz transition
• First-principles study of FeSe epitaxial films on SrTiO3
• $\text{Ab initio}$ derivation of effective Hamiltonian for La${}_2$CuO${}_4$/La${}_{1.55}$Sr${}_{0.45}$CuO${}_4$ heterostructure
• Possible pairing symmetry in the FeSe-based superconductors determined by quasiparticle interference
• Spin Resonances in Iron-Selenide High-Tc Superconductors by Proximity to Hidden Spin Density Wave
• Role of electric fields on enhanced electron correlation in surface-doped FeSe
• Intrinsic charge dynamics in high-Tc AFeAs(O,F) superconductors
• Strong enhancement of magnetic order from bulk to stretched monolayer FeSe as Hund's metals
• Coexistence of localized and itinerant magnetism in intercalated iron-selenide (Li,Fe)OHFeSe
• Magnetic and Ising quantum phase transitions in a model for isoelectronically tuned iron pnictides
• Pairing enhanced by local orbital fluctuations in a model for monolayer FeSe
• Insulating Parent Phase and Distinct Doping Evolution to Superconductivity in Single-Layer FeSe/SrTiO3 Films
• Anisotropy of upper critical fields and interface superconductivity in FeSe/SrTiO3 grown by PLD
• Optimal interlayer hopping and high temperature Bose-Einstein condensation of local pairs in quasi 2D superconductors
• High-throughput investigation of tunable superconductivity in FeSe films
• High-$T_c$ Iron-phosphide Superconductivity Enhanced by Reemergent Antiferromagnetic Spin Fluctuations in (Sr${}_4$Sc${}_2$O${}_6$)Fe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ probed by NMR
• Superconducting Phases in Lithium Decorated Graphene LiC 6
• Structure, superconductivity, and magnetism in Rb1-xFe1.6Se2-zSz
• Charge carrier dynamics of FeSe thin film investigated by terahertz magneto-optical spectroscopy
• Isotropic Cooper Pairs with Emergent Sign Changes in Single-Layer Iron Superconductor
• Stoichiometric FeTe is a Superconductor
• The effects of Coulomb interactions on the superconducting gaps in iron-based superconductors
• Status of Iron Based Superconductors: characteristics and relevant properties for applications
• Nonlinear optical responses in superconductors under magnetic fields: quantum geometry and topological superconductivity
• High quality Fe1+yTe synthesized by chemical vapor deposition with conspicuous vortex flow
• Superconductivity of highly spin-polarized electrons in FeSe probed by ${}^{77}$Se NMR
• Ubiquitous stripe phase and enhanced electron pairing in interfacial high-Tc superconductor FeSe/BaTiO${}_3$
• Non-charge-transfer origin of Tc Enhancement in a Surface Superconductor Si(111)-(root7xroot3)-In with Adsorbed Organic Molecules
• The electronic structure and magnetic phase transition of hexagonal FeSe thin films studied by photoemission spectroscopy
• Unconventional Multi-gap Superconductivity and Antiferromagnetic Spin Fluctuations in New Iron-arsenide LaFe2As2 in Heavily Electron-doped Regime
• Molecular Beam Epitaxy Growth of Tetragonal FeS Film on SrTiO3(001) Substrate
• Engineering topological superconductors using surface atomic-layer/molecule hybrid materials
• Interface suppressed nematicity and enhanced superconductivity of FeSe/NdFeO3 in the low doping regime
• In-situ topotactic chemical reaction for spectroscopies
• Imaging Se diffusion across the FeSe/SrTiO${}_3$ interface
• The phonon mechanism explanation of the superconductivity dichotomy between FeSe and FeS monolayers on STO and other substrates
• Resonance states near a quantum magnetic impurity in single-layer FeSe superconductors with $d$-wave symmetry
• Anisotropic gap structure and sign reversal symmetry in monolayer Fe(Se,Te)
• Modulation doping of the FeSe monolayer on SrTiO${}_3$
• Superconducting proximity effect in a Rashba-type surface state of Pb/Ge(111)
• Long range magnetic order in hydroxide layer doped (Li${}_{1-x-y}$Fe${}_x$Mn${}_y$OD)FeSe
• Nodeless superconducting gap and electron-boson coupling in (La,Pr,Sm)${}_3$Ni${}_2$O${}_7$ films
• $\mathrm{L}{\mathrm{i}}_{\mathrm{x}}({\mathrm{C}}_5{\mathrm{H}}_5\mathrm{N}{)}_{\mathrm{y}}\mathrm{F}{\mathrm{e}}_{2-\mathrm{z}}\mathrm{S}{\mathrm{e}}_2$: a defect resilient expanded-lattice high-temperature superconductor
• Observation of two distinct superconducting domes under pressure in tetragonal FeS
• Phase-separation control of K${}_x$Fe${}_{2-y}$Se${}_2$ superconductor through rapid-quenching process
• Staggered FeSe Monolayer on SrTiO${}_3$ (110) surface
• Tunable superconductivity in Fe-pnictide heterointerfaces by diffusion control
• Doping asymmetry and layer-selective metal-insulator transition in trilayer K${}_{3+x}$C${}_{60}$
• Atomic scale imaging of sign-changing order parameter in superconducting FeSe with Tunneling Andreev Reflection
• Theoretical studies of superconductivity in doped BaCoSO
• Direct evidence of a charge depletion region at the interface of Van der Waals monolayers and dielectric oxides: The case of superconducting FeSe/STO
• Enhanced superconductivity and moderate spin fluctuations suppressed at low energies in heavily electron-doped La1111-based superconductor
• Tuning the magnetism of the top-layer FeAs on BaFe${}_2$As${}_2$(001): First-principles study
• In-gap bound states induced by a single nonmagnetic impurity in sign-preserving s-wave superconductors with incipient bands
• Two new parent compounds for FeSe-based superconducting phases
• Unconventional superconductivity induced by suppressing an iron-selenium based Mott insulator CsFe4-xSe4
• Capping layer influence and isotropic in-plane upper critical field of the superconductivity at the FeSe/SrTiO3 interface
• Temperature dependence and limiting mechanisms of the upper critical field of FeSe thin films
• Tuning monolayer superconductivity in twisted NbSe${}_2$ graphene heterostructures
• Ferromagnetic inter-layer coupling in FeSe${}_{1-x}$S${}_x$ superconductors revealed by inelastic neutron scattering
• Nodeless multigap superconductivity in organic-ion-intercalated (tetrabutyl~ammonium)${}_{0.3}$FeSe
• Suppression of nematicity by tensile strain in multilayer FeSe/SrTiO${}_3$ films
• Inferior interfacial superconductivity in 1 UC FeSe/SrVO${}_3$/SrTiO${}_3$ with screened interfacial electron-phonon coupling
• Preformed Cooper Pairs in a Triclinic Iron Pnictide Superconductor
• Sublattice Dichotomy in Monolayer FeSe Superconductor
• Identifying a forward scattering superconductor through pump-probe spectroscopy
• Studies of superconductivity of Fe chalcogenides in films grown by PLD technique
• Study on fluctuations of interface-enhanced superconductivity in ultrathin FeSe/SrTiO3 by the Nernst effect
• Spin correlations in the parent phase of Li${}_{1-x}$Fe${}_x$ODFeSe
• LaO as a candidate substrate for realizing superconductivity in FeSe epitaxial film
• Enhancing the hybridization of plasmons in graphene with 2D superconductor collective modes
• Time-Resolved Photoemission Spectroscopy of Quantum Materials Using High Harmonic Generation: Probing Electron-Phonon Interactions and Non-Equilibrium Dynamics
• Suppression and revival of superconducting phase coherence in monolayer FeSe/SrTiO${}_3$
• Origin of the Electronic Structure in Single-Layer FeSe/SrTiO3 Films
• Fabrication of oxide/FeSe multilayer films using the PLD technique
• Fragile pressure-induced magnetism in FeSe superconductors with a thickness reduction
• Fe-vacancy ordered Fe4Se5: The insulating parent phase of FeSe superconductor
• Temperature evolution of the Fermi surface of the FeSe monolayer on SrTiO${}_3$
• Disorder-induced time effect in the antiferromagnetic domain state of Fe1+yTe
• Quantum-Critical Spin-Density Waves in Iron-Selenide High-Tc Superconductors
• Dual Enhancement of Superconductivity in FeSe/SrTiO3 via Orbital and Correlation Synergy
• Coexistence of d-Wave Altermagnetism and Topological States in Janus FeSeX (X = S, Te) Monolayers
• Superconductivity in the bilayer Hubbard model: Are two Fermi surfaces better than one?