Theory of Josephson scanning microscopy with $s$-wave tip on unconventional superconducting surface: application to Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$

Peayush Choubey, P. J. Hirschfeld

Josephson scanning tunneling microscopy (JSTM) is a powerful probe of the local superconducting order parameter, but studies have been largely limited to cases where superconductin…