Intra-unit-cell Josephson scanning tunneling spectroscopy of the cuprate Bi${}_{1.2}$Pb${}_{0.8}$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$

Fengyu Yao, Jiong Mei, Wenjin Mao +15

The predominantly $d_{x^2-y^2}$-wave pairing symmetry of cuprate superconductors is well established, yet its microscopic manifestation in local Cooper-pair tunneling remains less…