Temperature Dependent Gap Anisotropy from Interlayer Tunneling

Details Temperature Dependent Gap Anisotropy from Interlayer Tunneling Temperature Dependent Gap Anisotropy from Interlayer Tunneling

1994-06-07

arxiv.org/abs/cond-mat/9406046v1

Physics

Condensed Matter

revtex version 3.0, 10 pages 2 figures available by ftp in the "anonymous" account as imsc.ernet.in:/pub/physics/94_30fig1.ps,

Scientific paper

A recent experiment by Ma and collaborators shows that the gap anisotropy in ${\rm Bi}_2 {\rm Sr}_2 {\rm Ca}_1 {\rm Cu}_2 {\rm O}_{8+x}$ is strongly temperature dependent. In particular, the superconducting gap along the $\Gamma - M$ direction shows a weaker temperature dependence than the gap along the $\Gamma - X$ direction which decreases rapidly with temperature. We explain this novel feature as a natural consequence of the interlayer tunneling mechanism of superconductivity.

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