Possible Fulde-Ferrell-Larkin-Ovchinnikov State in CeCoIn_5

Abstract

Angular dependent magnetothermal conductivity experiments on CeCoIn_5 indicate that this compound is a d-wave superconductor. In this study, the low-temperature behavior of the upper critical field is measured in a single crystal of CeCoIn_5 along the directions H parallel a and H parallel c. The data is compared with model calculations of the upper critical field in a d-wave superconductor. It is found that the observed H_c2(T) along H parallel a is consistent with a Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state at low temperatures, T < 0.7K, whereas for H parallel c the FFLO state appears to be absent in CeCoIn_5. Furthermore, it is predicted that the quasiparticle density of states in the FFLO state exhibits a complex peak structure which should be observable by scanning tunneling microscopy.

5 pages RevTex with 3 encapsulated postscript figures

References in corpus (14)

• Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in CeCoIn5
• Angular Position of Nodes in the Superconducting Gap of Quasi-2D Heavy-Fermion Superconductor CeCoIn_5
• First order superconducting phase transition in CeCoIn${}_5$
• Superconducting Gap Structure of kappa-(BEDT-TTF)2Cu(NCS)2 Probed by Thermal Conductivity Tensor
• Superconductivity in an organic insulator at very high magnetic fields
• GINZBURG-LANDAU THEORY OF VORTICES IN $d$-WAVE SUPERCONDUCTORS
• Response of a $d_{x^2-y^2}$ Superconductor to a Zeeman Magnetic Field
• Magnetic field - temperature phase diagram of quasi-two-dimensional organic superconductor lambda-(BETS)_2 GaCl_4 studied via thermal conductivity
• Direct evidence for an intrinsic square vortex lattice in the overdoped high-Tc superconductor La1.83Sr0.17CuO4+d
• Structure of the Fulde-Ferrell-Larkin-Ovchinnikov state in two-dimensional superconductors
• New superconducting phases in field-induced organic superconductor lambda-(BETS)2FeCl4
• Thermodynamics and optical conductivity of unconventional spin density waves
• Novel vortex lattice transition in d-wave superconductors
• Fulde-Ferrell-Larkin-Ovchinnikov State and Field-Induced Superconductivity in an Organic Superconductor

Cited by in corpus (29)

• Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors
• BCS-BEC Crossover and the Unitary Fermi Gas
• Texture in the Superconducting Order Parameter of CeCoIn_5 Revealed by Nuclear Magnetic Resonance
• Evidence of Andreev bound states as a hallmark of the FFLO phase in $\kappa$-(BEDT-TTF)${}_2$Cu(NCS)${}_2$
• Coexistence of antiferromagnetism and superconductivity in CeRhIn5 under high pressure and magnetic field
• 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
• 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
• Field-Tuned Quantum Critical Point in CeCoIn${}_5$ Near the Superconducting Upper Critical Field
• Observation of Spin Susceptibility Enhancement in the Possible FFLO State in CeCoIn${}_5$
• Switching of magnetic domains reveals evidence for spatially inhomogeneous superconductivity
• Magnetic field induced lattice anomaly inside the superconducting state of CeCoIn${}_5$: evidence of the proposed Fulde-Ferrell-Larkin-Ovchinnikov state
• Probing the FFLO phase by double occupancy modulation spectroscopy
• Fulde-Ferrell states and Berezinskii-Kosterlitz-Thouless phase transition in two-dimensional imbalanced Fermi gases
• Field Dependent Coherence Length in the Superclean, High-Kappa Superconductor CeCoIn5
• Supercurrent in Nodal Superconductors
• Vortex tilt modulus in Fulde-Ferrell-Larkin-Ovchinnikov state
• Conductance characteristics between a normal metal and a two-dimensional Fulde-Ferrell-Larkin-Ovchinnikov superconductor: the Fulde-Ferrell state
• Magnetic field induced singlet - triplet phase transition in quasi one-dimensional organic superconductors
• Symmetries of the quasi-1d Bechgaard salts superconducting state in an applied magnetic field
• Theory of Fulde-Ferrell-Larkin-Ovchinnikov state of superconductors with and without inversion symmetry: Hubbard model approach
• Wilson ratio in Yb-substituted CeCoIn5
• Vortex state in d-wave superconductors with strong paramagnetism: transport and specific heat anisotropy
• Antiferromagnetic superconductors with effective mass anisotropy in magnetic fields
• Spectroscopic Evidence for the Direct Involvement of Local Moments in the Pairing Process of the Heavy-Fermion Superconductor CeCoIn${}_5$
• Gossamer Superconductivity, New Paradigm?
• Scaling Behavior of Angular Dependent Resistivity in CeCoIn${}_5$: Possible Evidence for d-Wave Density Waves
• Connection between in-plane upper critical field $H_{c2}$ and gap symmetry in layered $d$-wave superconductors revisited