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Low Temperature Physics / Volume 25 / Issue 5 / LETTERS TO THE EDITOR

Low Temp. Phys. 25, 381 (1999); http://dx.doi.org/10.1063/1.593753 (3 pages)

On a possible reason behind the anisotropy observed in the superconducting properties of underdoped cuprates

V. M. Loktev1,2, R. M. Quick2, and S. G. Sharapov1,3

1N. N. Bogoliubov Institute of Theoretical Physics, National Academy of Sciences of the Ukraine, 252143 Kiev, Ukraine;
2National Engineering University “KPI,” 252056 Kiev, Ukraine;
3Department of Physics, University of Pretoria, 0002 Pretoria, South Africa

An attempt is made to interpret the experiments in which the superconducting transition temperature in underdoped HTSC was found to depend on the direction of the current passing through the sample. It is suggested that one (higher) temperature approximately corresponds to the point TBKT of the two-dimensional transition, while the other is the temperature Tc corresponding to 3D ordering between layers. For conditions when Tc ≥ TBKT (relatively high values of carrier concentration and interlayer coupling), the anisotropy of the superconducting properties becomes negligible and the layered system possesses only one critical temperature. © 1999 American Institute of Physics.

© 1999 American Institute of Physics

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KEYWORDS and PACS

Keywords

high-temperature superconductors, superconducting transition temperature, carrier density

PACS

  • 74.10.+v

    Occurrence, potential candidates

  • 74.62.-c

    Transition temperature variations, phase diagrams

  • 74.25.F-

    Transport properties

  • 74.72.-h

    Cuprate superconductors

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.593753

PUBLICATION DATA

ISSN

1063-777X (print)  
1090-6517 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    V. P. Gusynin, V. M. Loktev, and S. G. Sharapov, Fiz. Nizk. Temp. 23, 816 (1997) [Low Temp. Phys. 23, 612 (1997)].LTPHEG000023000008000612000001

    X.-G. Wen and R. Kan, Phys. Rev. B 37, 595 (1988).

    V. I. Loktev and V. M. Turkovskii, Fiz. Nizk. Temp. 24, 767 (1998) [Low Temp. Phys. 24, 578 (1998)].LTPHEG000024000008000578000001


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