Topologically Protected Quantum Transport in Locally Exfoliated Bismuth at Room Temperature
Topologically Protected Quantum Transport in Locally Exfoliated Bismuth at Room Temperature
We report electrical conductance measurements of Bi nanocontacts created by repeated tip-surface indentation using a scanning tunneling microscope at temperatures of 4 and 300 K. As a function of the elongation of the nanocontact, we measure robust, tens of nanometers long plateaus of conductance G0 = 2e2/h at room temperature. …