Fulde-Ferrell-Larkin-Ovchinnikov phase in the presence of pair hopping interaction

Abstract

The recent experimental support for the presence of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase in the CeCoIn5 directed the attention towards the mechanisms responsible for this type of superconductivity. We investigate the FFLO state in a model where on--site/inter--site pairing coexists with repulsive pair hopping interaction. The latter interaction is interesting in that it leads to pairing with nonzero momentum of the Cooper pairs even in the absence of the external magnetic field (the so-called eta-pairing). It turns out that depending on the strength of the pair hopping interaction the magnetic field can induce one of two types of the FFLO phase with different spatial modulations of the order parameter. It is argued that the properties of the FFLO phase may give information about the magnitude of the pair hopping interaction. We also show that eta-pairing and d-wave superconductivity may coexist in the FFLO state. It holds true also for superconductors which in the absence of magnetic field are of pure d-wave type.

arXiv comment16 pages, 8 figures

References in corpus (40)

• Inhomogeneous Superconductivity in Condensed Matter and QCD
• Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in CeCoIn5
• Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors
• Interior Gap Superfluidity
• Calorimetric Evidence for a Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in the Layered Organic Superconductor κ$-(BEDT-TTF)$_2$Cu(NCS)$_2$
• The Crystallography of Color Superconductivity
• Texture in the Superconducting Order Parameter of CeCoIn_5 Revealed by Nuclear Magnetic Resonance
• Fingerprints of spin-orbital physics in cubic Mott insulators: Magnetic exchange interactions and optical spectral weights
• Fulde-Ferrell-Larkin-Ovchinnikov state in a perpendicular field of quasi two-dimensional CeCoIn5
• New High Field State of Flux Line Lattice in Unconventional Superconductor CeCoIn_5
• Metastable superfluidity of repulsive fermionic atoms in optical lattices
• Effects of Pauli paramagnetism on superconducting vortex phase diagram in strong fields
• Fulde-Ferrell-Larkin-Ovchinnikov superfluidity in one-dimensional optical lattices
• Anomalous In-Plane Anisotropy of the Onset of Superconductivity in (TMTSF)2ClO4
• Structure of the Fulde-Ferrell-Larkin-Ovchinnikov state in two-dimensional superconductors
• Anisotropy of Thermal Conductivity and Possible Signature of the Fulde-Ferrell-Larkin-Ovchinnikov state in CeCoIn_5
• Phase Diagram and Spectroscopy of FFLO states of two-dimensional d-wave superconductors
• Anomalous quasiparticle transport in the superconducting state of CeCoIn5
• η-superconductivity in the Hubbard chain with pair hopping
• FFLO state in 1, 2, and 3 dimensional optical lattices combined with a non-uniform background potential
• Superconductivity in the Hubbard model with pair hopping
• Transition to the Fulde-Ferrel-Larkin-Ovchinnikov phases in three dimensions : a quasiclassical investigation at low temperature with Fourier expansion
• Magnetic field induced lattice anomaly inside the superconducting state of CeCoIn${}_5$: evidence of the proposed Fulde-Ferrell-Larkin-Ovchinnikov state
• BCS superfluidity in ultracold gases with unequal atomic populations
• Local tunneling spectroscopy as signatures of the Fulde-Ferrell-Larkin-Ovchinnikov state in s- and d-wave Superconductors
• Fulde-Ferrell-Larkin-Ovchinnikov state in disordered s-wave superconductors
• Coexistence of SDW, d-wave singlet and staggered $\pi$-triplet superconductivity
• FFLO Superconductivity near the Antiferromagnetic Quantum Critical Point
• A Two-dimensional Superconductor in a Tilted Magnetic Field - new states with finite Cooper-pair momentum
• Critical field in a model with local pairs
• Conductance characteristics between a normal metal and a two-dimensional Fulde-Ferrell-Larkin-Ovchinnikov superconductor: the Fulde-Ferrell state
• Coupled SDW and Superconducting Order in FFLO State of CeCoIn${}_5$
• Theory of Fulde-Ferrell-Larkin-Ovchinnikov state of superconductors with and without inversion symmetry: Hubbard model approach
• Upper critical field for anisotropic superconductivity. A tight-binding approach
• Theory of tunneling spectroscopy in the Larkin-Ovchinnikov state
• Upper critical field for electrons in two-dimensional lattice
• Antiferromagnetic superconductors with effective mass anisotropy in magnetic fields
• Upper critical field for underdoped high-T_c superconductors. Pseudogap and stripe--phase
• Tunneling properties of a bound pair of Fermi atoms in an optical lattice
• Quantum Monte Carlo Study of the Quasi-One-Dimensional Superconductivity

Cited by in corpus (18)

• The Fulde-Ferrell-Larkin-Ovchinnikov state in pnictides
• Coexistence of antiferromagnetism and superconductivity within t-J model with strong correlations and nonzero spin polarization
• Influence of $s_{\pm }$ symmetry on unconventional superconductivity in pnictides above the Pauli limit -- two-band model study
• Renormalization theory for the Fulde-Ferrell-Larkin-Ovchinnikov states at $T>0$
• Metastability and phase separation in a simple model of a superconductor with extremely short coherence length
• Some properties of two dimensional extended repulsive Hubbard model with intersite magnetic interactions - a Monte Carlo study
• Superconductivity, metastability and magnetic field induced phase separation in the atomic limit of the Penson-Kolb-Hubbard model
• GPU-based acceleration of free energy calculations in solid state physics
• Critical behaviour in one dimension: unconventional pairing, phase separation, BEC-BCS crossover and magnetic Lifshitz transition
• Suppression of superfluid stiffness near Lifshitz-point instability to finite momentum superconductivity
• Phase separation of superconducting phases in the Penson-Kolb-Hubbard model
• Probe-type of superconductivity by impurity in materials with short coherence length: the s-wave and $\eta$-wave phases study
• Superfluidity of a spin-imbalanced Fermi gas in a three-dimensional optical lattice
• Reentrant Fulde-Ferrell-Larkin-Ovchinnikov superfluidity in the honeycomb lattice
• Quantum size effect on the paramagnetic critical field in Pb nanofilms
• Unconventional superconductivity in iron-base superconductors in a three-band model
• Collective excitations of an imbalanced fermion gas in a 1D optical lattice
• Lifshitz transitions induced by magnetic field