Thermomagnetic phenomena in layered conductors

2006 ◽  
Vol 32 (12) ◽  
pp. 1154-1157 ◽  
Author(s):  
O. V. Kirichenko ◽  
V. G. Peschansky ◽  
R. A. Hasan
Keyword(s):  
Thermomagnetic Phenomena

A GENERALIZED VARIATIONAL PRINCIPLE FOR TRANSPORT PHENOMENA

1958 ◽  
Vol 36 (10) ◽  
pp. 1308-1318 ◽  
Author(s):  
G. E. Tauber
Keyword(s):  
Magnetic Field ◽  
Variational Principle ◽  
Ritz Method ◽  
Transport Coefficients ◽  
Distribution Functions ◽  
Generalized Variational Principle ◽  
Lattice Vibrations ◽  
Arbitrary Direction ◽  
Energy Surfaces ◽  
Thermomagnetic Phenomena

A generalized variational principle has been formulated which takes the phonon distribution functions and the external magnetic field into account, is valid for an arbitrary direction of the electric field and polarization of the lattice vibrations, and does not depend on any special form of the energy surfaces. The various transport coefficients, for both thermoelectric and thermomagnetic phenomena, are obtained by the Ritz method in terms of infinite determinants without requiring an explicit solution of the transport equations.

Entropy-based theory of thermomagnetic phenomena

2021 ◽  
pp. 2150190
Author(s):  
Andrei Sergeev ◽  
Michael Reizer
Keyword(s):  
Linear Response ◽  
Hot Spot ◽  
High Sensitivity ◽  
Transfer Entropy ◽  
Cooper Pairs ◽  
Heat Current ◽  
Electric And Magnetic Fields ◽  
Flux Formula ◽  
The Difference ◽  
Thermomagnetic Phenomena

We show that in the linear response approximation only entropy provides coupling between thermal and electric phenomena. The dissipationless quantum currents — magnetization, superconducting, persistent and topological edge currents — do not produce and transfer entropy and may be excluded from final formulas for thermomagnetic coefficients. The magnetization energy flux, [Formula: see text], in crossed electric and magnetic fields strongly modifies the Poynting vector in magnetic materials and metamaterials, but do not contribute to the heat current. Calculating entropy fluxes of fluctuating Cooper pairs in pure and disordered superconductors, we obtained the fluctuation Nernst coefficient proportional to [Formula: see text] ([Formula: see text] is the Fermi energy). We also introduce the thermomagnetic entropy per unit charge and derive the Nernst coefficient proportional to the difference of the thermoelectric and thermomagnetic entropies. This explains the Sondheimer cancellation and high sensitivity of thermomagnetic phenomena to correlations. In 2D superconductors, the transport entropy transferred by a vortex moving through the background formed by vortex–antivortex pairs is the configuration entropy of [Formula: see text], which strongly exceeds the intrinsic entropy of vortex core. Beyond the linear response, the nonentropic forces can lead to phenomena unexpected from thermodynamics, such as vortex attraction to the moving hot spot. Quantum currents do not transfer entropy and may be used as ideal connectors to quantum nanodetectors.

Galvanomagnetic and thermomagnetic phenomena in thin metal CoPt films

2021 ◽  
Author(s):  
Yurii M. Kuznetsov ◽  
Mikhail V. Dorokhin ◽  
Anton V. Zdoroveyshchev ◽  
Aleksey V. Kudrin ◽  
Polina B. Demina ◽  
...  
Keyword(s):  
Thin Metal ◽  
Thermomagnetic Phenomena
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