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Title: Fluctuation conductivity of layered superconductors in a perpendicular magnetic field

Abstract

The leading contributions to the [ital c]-axis conductivity of layered superconductors arising from superconducting fluctuations of the order parameter are discussed for arbitrary intralayer scattering. The contributions from fluctuations of the normal quasiparticle density of states are shown to be opposite in sign to the Aslamazov-Larkin and Maki-Thompson contributions, leading to a peak in the overall [ital c]-axis resistivity [rho][sub [ital c]]([ital T]) above [ital T][sub [ital c]]. This peak is enhanced by a magnetic field [bold H][parallel][bold [cflx c]]. With increasing [ital H], the relative peak maximum in [rho][sub [ital c]]([ital T],[ital H]) increases in magnitude and is shifted to lower temperatures by an amount proportional to [ital H][sup 2] for weak fields and to [ital H] for strong fields. For comparison, the fluctuation conductivity parallel to the layers has been calculated including the fluctuations of the normal density of states. Our results are discussed in regard to recent experiments with YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] and Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8+[delta]].

Authors:
; ;  [1];  [2];  [3]
  1. Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)
  2. Institute for High Pressure Physics, Academy of Sciences of Russia, Troitsk 142092 (Russian Federation) Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)
  3. Moscow Institute of Steel and Alloys, Leninskii Prospect 4, Moscow 117936 (Russian Federation)
Publication Date:
OSTI Identifier:
5990723
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter; (United States)
Additional Journal Information:
Journal Volume: 48:17; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; SUPERCONDUCTORS; ELECTRIC CONDUCTIVITY; BARIUM OXIDES; BISMUTH OXIDES; CALCIUM OXIDES; COPPER OXIDES; FLUCTUATIONS; MAGNETIC FIELDS; STRONTIUM OXIDES; YTTRIUM OXIDES; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; VARIATIONS; YTTRIUM COMPOUNDS; 665411* - Basic Superconductivity Studies- (1992-)

Citation Formats

Dorin, V V, Klemm, R A, Varlamov, A A, Buzdin, A I, and Livanov, D V. Fluctuation conductivity of layered superconductors in a perpendicular magnetic field. United States: N. p., 1993. Web. doi:10.1103/PhysRevB.48.12951.
Dorin, V V, Klemm, R A, Varlamov, A A, Buzdin, A I, & Livanov, D V. Fluctuation conductivity of layered superconductors in a perpendicular magnetic field. United States. https://doi.org/10.1103/PhysRevB.48.12951
Dorin, V V, Klemm, R A, Varlamov, A A, Buzdin, A I, and Livanov, D V. 1993. "Fluctuation conductivity of layered superconductors in a perpendicular magnetic field". United States. https://doi.org/10.1103/PhysRevB.48.12951.
@article{osti_5990723,
title = {Fluctuation conductivity of layered superconductors in a perpendicular magnetic field},
author = {Dorin, V V and Klemm, R A and Varlamov, A A and Buzdin, A I and Livanov, D V},
abstractNote = {The leading contributions to the [ital c]-axis conductivity of layered superconductors arising from superconducting fluctuations of the order parameter are discussed for arbitrary intralayer scattering. The contributions from fluctuations of the normal quasiparticle density of states are shown to be opposite in sign to the Aslamazov-Larkin and Maki-Thompson contributions, leading to a peak in the overall [ital c]-axis resistivity [rho][sub [ital c]]([ital T]) above [ital T][sub [ital c]]. This peak is enhanced by a magnetic field [bold H][parallel][bold [cflx c]]. With increasing [ital H], the relative peak maximum in [rho][sub [ital c]]([ital T],[ital H]) increases in magnitude and is shifted to lower temperatures by an amount proportional to [ital H][sup 2] for weak fields and to [ital H] for strong fields. For comparison, the fluctuation conductivity parallel to the layers has been calculated including the fluctuations of the normal density of states. Our results are discussed in regard to recent experiments with YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] and Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8+[delta]].},
doi = {10.1103/PhysRevB.48.12951},
url = {https://www.osti.gov/biblio/5990723}, journal = {Physical Review, B: Condensed Matter; (United States)},
issn = {0163-1829},
number = ,
volume = 48:17,
place = {United States},
year = {Mon Nov 01 00:00:00 EST 1993},
month = {Mon Nov 01 00:00:00 EST 1993}
}