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Kosterlitz-Thouless transition in Tl sub 2 Ba sub 2 CaCu sub 2 O sub 8 thin films

Journal Article · · Physical Review (Section) B: Condensed Matter; (USA)
;  [1]; ;  [2]
  1. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (USA)
  2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
Electrical transport properties of {ital c}-axis-oriented Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} thin films have been examined within the context of the Kosterlitz-Thouless (KT) model. The nonlinear current versus voltage and resistivity versus magnetic field characteristics below the KT transition temperature ({ital T}{sub {ital c}}=99.0 K), together with the exponential inverse-square-root temperature dependence of the resistivity just above {ital T}{sub {ital c}}, were consistent with each other and with the theory. The parametrization of the resistivity data well above the transition by Aslamazov-Larkin theory was also consistent with that of the KT theory.
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5249465
Journal Information:
Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:13; ISSN 0163-1829; ISSN PRBMD
Country of Publication:
United States
Language:
English