Negligible Normal Fluid in Superconducting State of Heavily Overdoped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Detected by Ultra-Low Temperature Angle-Resolved Photoemission Spectroscopy

Chaohui Yin, Qinghong Wang, Yuyang Xie +23

In high temperature cuprate superconductors, it was found that in the overdoped region the superfluid density decreases with the increase of hole doping. One natural question is wh…