Superconducting state properties of a d-wave superconductor with mass anisotropy

Ji-Hai Xu, Yong Ren, C. S. Ting

YBa${}_2$Cu${}_3$O${}_7$ (YBCO) exhibits a large anisotropy between the $a$ and $b$ axes in the CuO${}_2$ planes because of the presence of CuO chains. In order to account for such an anis…