TY - JOUR
T1 - Coulomb drag in normal metals and superconductors
T2 - Diagrammatic approach
AU - Kamenev, Alex
AU - Oreg, Yuval
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1995
Y1 - 1995
N2 - The diagrammatic linear response formalism for the Coulomb drag in two-layer systems is developed. This technique can be used to treat both elastic disorder and intralayer interaction effects. In the absence of intralayer electron-electron correlations we reproduce earlier results, obtained using the kinetic equation and the memory-function formalism. In addition we calculate weak-localization corrections to the drag coefficient and the Hall drag coefficient in a perpendicular magnetic field. As an example of the intralayer interaction effects we consider a situation where one (or both) layers are close to (but above) the superconducting transition temperature. Fluctuation corrections, analogous to the Aslamazov-Larkin corrections, to the drag coefficient are calculated. Although the fluctuation corrections do not enhance the drag coefficient for normal-superconductor systems, a dramatic enhancement is found for superconductor-superconductor structures.
AB - The diagrammatic linear response formalism for the Coulomb drag in two-layer systems is developed. This technique can be used to treat both elastic disorder and intralayer interaction effects. In the absence of intralayer electron-electron correlations we reproduce earlier results, obtained using the kinetic equation and the memory-function formalism. In addition we calculate weak-localization corrections to the drag coefficient and the Hall drag coefficient in a perpendicular magnetic field. As an example of the intralayer interaction effects we consider a situation where one (or both) layers are close to (but above) the superconducting transition temperature. Fluctuation corrections, analogous to the Aslamazov-Larkin corrections, to the drag coefficient are calculated. Although the fluctuation corrections do not enhance the drag coefficient for normal-superconductor systems, a dramatic enhancement is found for superconductor-superconductor structures.
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U2 - 10.1103/PhysRevB.52.7516
DO - 10.1103/PhysRevB.52.7516
M3 - Article
AN - SCOPUS:0000181633
VL - 52
SP - 7516
EP - 7527
JO - Physical Review B
JF - Physical Review B
SN - 0163-1829
IS - 10
ER -