Quantum kinetic approach to the calculation of the Nernst effect

Abstract

We show that the strong Nernst effect observed recently in amorphous superconducting films far above the critical temperature is caused by the fluctuations of the superconducting order parameter. We employ the quantum kinetic approach for the derivation of the Nernst coefficient. We present here the main steps of the calculation and discuss some subtle issues that we encountered while calculating the Nernst coefficient. In particular, we demonstrate that in the limit T=0 the contribution of the magnetization ensures the vanishing of the Nernst signal in accordance with the third law of thermodynamics. We obtained a striking agreement between our theoretical calculations and the experimental data in a broad region of temperatures and magnetic fields.

24 pages, 13 figures

References in corpus (8)

• Theory of the Nernst effect near quantum phase transitions in condensed matter, and in dyonic black holes
• Oscillating Nernst-Ettingshausen effect in Bismuth across the quantum limit
• Giant Nernst Effect due to Fluctuating Cooper Pairs in Superconductors
• Nernst effect and diamagnetism in phase fluctuating superconductors
• Fluctuations of the superconducting order parameter as an origin of the Nernst effect
• A length scale for the superconducting Nernst signal above T${}_c$ in Nb${}_{0.15}$Si${}_{0.85}$
• Quantum kinetic approach for studying thermal transport in the presence of electron-electron interactions and disorder
• Hall Coefficient in an Interacting Electron Gas

Cited by in corpus (18)

• Nernst effect in metals and superconductors: a review of concepts and experiments
• Heat transport as torsional responses and Keldysh formalism in a curved spacetime
• The Hall Effect in Superconducting Films
• Strong thermal fluctuations in cuprate superconductors in magnetic field above Tc
• Cuprate diamagnetism in the presence of a pseudogap: Beyond the standard fluctuation formalism
• Transverse thermoelectric transport in a model of many competing order parameters
• Anomalous Thermal Hall Effect in a Disordered Weyl Ferromagnet
• Thermodynamic constraints on the amplitude of quantum oscillations
• Critical Viscosity of a Fluctuating Superconductor
• The Role of the Core Energy in the Vortex Nernst Effect
• Spin Hall effect generated by fluctuating vortices in type-II superconductors
• Magnetization Currents of Fluctuative Cooper Pairs
• Fluctuation conductivity of disordered superconductors in magnetic fields
• Evidence for Pauli-limiting behaviour at high fields and enhanced upper critical fields near T_c in several disordered FeAs based Superconductors
• Influence of vortices and phase fluctuations on thermoelectric transport properties of superconductors in a magnetic field
• Anomalous mesoscopic kinetics in disordered superconductors
• Universal superconducting fluctuations and the implications for the phase diagram of the cuprates
• Nernst and Ettingshausen effects in the Laughlin geometry