On the relationship between the critical temperature and the London penetration depth in layered organic superconductors

Powell, B. J. and McKenzie, Ross H. (2004) On the relationship between the critical temperature and the London penetration depth in layered organic superconductors. Journal of Physics: Condensed Matter, 16 30: L367-L373. doi:10.1088/0953-8984/16/30/L03


Author Powell, B. J.
McKenzie, Ross H.
Title On the relationship between the critical temperature and the London penetration depth in layered organic superconductors
Journal name Journal of Physics: Condensed Matter   Check publisher's open access policy
ISSN 0953-8984
Publication date 2004-08-04
Sub-type Article (original research)
DOI 10.1088/0953-8984/16/30/L03
Volume 16
Issue 30
Start page L367
End page L373
Total pages 7
Place of publication Bristol
Publisher Iop Publishing Ltd
Language eng
Subject 240203 Condensed Matter Physics - Electronic and Magnetic Properties; Superconductivity
Abstract We present an analysis of previously published measurements of the London penetration depth of layered organic superconductors. The predictions of the BCS theory of superconductivity are shown to disagree with the measured zero temperature, in plane, London penetration depth by up to two orders of magnitude. We find that fluctuations in the phase of the superconducting order parameter do not determine the superconducting critical temperature as the critical temperature predicted for a Kosterlitz–Thouless transition is more than an order of magnitude greater than is found experimentally for some materials. This places constraints on theories of superconductivity in these materials.
Keyword condensed matter physics
superconductors
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

 
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Created: Thu, 05 Apr 2007, 23:59:36 EST by Kaye Eldridge on behalf of School of Mathematics & Physics