Mixed-State Thermodynamics of Superconductors with Moderately Large Paramagnetic Effects

Abstract

Effects of Pauli paramagnetism on thermodynamic quantities in a vortex state, such as the specific heat $C$ and magnetization $M$, are studied using the quasiclassical Eilenberger formalism. We demonstrate that with an increase of paramagnetic depairing effect, the sigh of the curvature of the field dependence of $C$ changes from negative to positive, and that the Maki parameter ${\kappa }_2$ becomes an increasing function of temperature. Our results provide a natural explanation for the unusual field dependence of $C$ seen in CeCoIn${}_5$ in terms of the paramagnetic effect.

arXiv commentPublished in J. Phys. Soc. Jpn. 74, 2181 (2005)

References in corpus (17)

• 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${}_5$
• Field dependence of the vortex structure in d-wave and s-wave superconductors
• New High Field State of Flux Line Lattice in Unconventional Superconductor CeCoIn_5
• Effects of Pauli paramagnetism on superconducting vortex phase diagram in strong fields
• Determination of the Superconducting Gap Structure in All Bands of the Spin-Triplet Superconductor Sr2RuO4
• Field dependence of the zero energy density of states around vortices in an anisotropic gap superconductor
• Thermodynamics of d-wave superconductors in a magnetic field
• A Two-dimensional Superconductor in a Tilted Magnetic Field - new states with finite Cooper-pair momentum
• Reversible magnetization of MgB2 single crystals with a two-gap nature
• Quasiclassical Approach to Transport in the Vortex State and the Hall Effect
• Modulated Vortex Lattice in High Fields and Gap Nodes
• Anisotropic Diamagnetic Response in Type-II Superconductors with Gap and Fermi-Surface Anisotropies
• Revised Calculation of ${\mathbf{\kappa }}_2(T)$ for s-wave Type-II Superconductors
• Entropy and Spin Susceptibility of s-wave Type-II Superconductors near $H_{c2}$
• Combined Paramagnetic and Diamagnetic Response of YBCO

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• Thermodynamic phase diagram of Fe(Se${}_{0.5}$Te${}_{0.5}$) single crystals up to 28 Tesla
• Vortex states in superconductors with strong Pauli-paramagnetic effect
• Observations of Pauli Paramagnetic Effects on the Flux Line Lattice in CeCoIn5
• Vortex state in d-wave superconductors with strong paramagnetism: transport and specific heat anisotropy
• Signatures of the Helical Phase in the Critical Fields at Twin Boundaries of Non-Centrosymmetric Superconductors
• Magnetic field-induced quasiparticle excitation in Nb3Sn: Evidence for anisotropic s-wave pairing
• Anomalous Paramagnetic Magnetization in Mixed State of CeCoIn${}_5$ single crystals
• Temperature-dependent Ginzburg-Landau parameter
• Basal-Plane Magnetic Anisotropies of High-kappa d-Wave Superconductors in a Mixed State: A Quasiclassical Approach
• Spin Hall effect generated by fluctuating vortices in type-II superconductors
• Time-dependent Ginzburg-Landau theory of the vortex spin Hall effect
• Quasiclassical theory of vortex states in locally non-centrosymmetric superconductors: application to CeRh${}_2$As${}_2$
• Nonlinear paramagnetic magnetization in the mixed state of CeCoIn_5