Temperature Dependent Gap Anisotropy from Interlayer Tunneling

V. N. Muthukumar, M. Sardar

A recent experiment by Ma and collaborators shows that the gap anisotropy in ${\mathrm{Bi}}_2{\mathrm{Sr}}_2{\mathrm{Ca}}_1{\mathrm{Cu}}_2{\mathrm{O}}_{8+x}$ is strongly temperature dependent. In parti…