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- Title
Electric Field Dependence of the Thermal Conductivity of a Granular Superconductor: Giant Field-Induced Effects Predicted.
- Authors
Sergeenkov, S. A.
- Abstract
The temperature and electric-field dependence of the electronic contribution to the thermal conductivity (TO) of a granular superconductor is considered within a 3D model of inductive Josephson junction arrays. In addition to a low-temperature maximum of zero-field TC κ(T,0) (controlled by mutual inductance L[sub 0] and normal state resistivity R[sub n]), the model predicts the two major effects in the applied electric field: (i) the decrease in the linear TC and (ii) the giant enhancement of the nonlinear (i.e. ∇T-dependent) TC with Δκ(T,E)/κ(T,0), reaching 500% for parallel electric fields E=E[sub T](E[sub T]=S[sub 0]|∇T |isan“intrinsic”thermoelectricfield). The possibility of experimentally observing the predicted effects in granular superconductors is discussed. © 2002 MAIK “Nauka / Interperiodica”.
- Subjects
SUPERCONDUCTORS; ELECTRIC fields; TEMPERATURE; JOSEPHSON junctions
- Publication
JETP Letters, 2002, Vol 76, Issue 3, p170
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1514762