ISSN:
1572-9605
Keywords:
dx2y2
;
tunnelling
;
antiferromagnetic fluctuations
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract Self consistent calculations, based on the 2 dimensional Hubbard model, indicate that the nearly antiferromagnetic Fermi liquid may be a superconductor with dx2-y2 symmetry. The recent observation of a large anisotropy of the in plane penetration depth has been widely interpreted as evidence that a significant part of the condensate in YBa2Cu3O7−gd resides in the chains. This introduces orthorhombic symmetry. Calculations, which remain within a single tight binding band model but with different nearest neighbour hopping in a- and b-directions, can account for the penetration depth anisotropy and also explain the observed size of the D.C. Josephson current between YBa2Cu3O7−gd and Pb in c-axis tunnelling.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00722815
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