Temperature Dependent Gap Anisotropy from Interlayer Tunneling
Abstract
Description
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 $Γ- M$ direction shows a weaker temperature dependence than the gap along the $Γ- X$ direction which decreases rapidly with temperature. We explain this novel feature as a natural consequence of the interlayer tunneling mechanism of superconductivity.
revtex version 3.0, 10 pages 2 figures available by ftp in the "anonymous" account as imsc.ernet.in:/pub/physics/94_30fig1.ps,94_30fig2.ps (If help needed contact muthu@imsc.ernet.in) - IMSc/94/30
revtex version 3.0, 10 pages 2 figures available by ftp in the "anonymous" account as imsc.ernet.in:/pub/physics/94_30fig1.ps,94_30fig2.ps (If help needed contact muthu@imsc.ernet.in) - IMSc/94/30