Hall anomaly and vortex charge in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_x$

Yuval Nitzav, Amit Kanigel

We present a systematic study of the Hall conductance in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_x$ (Bi2212) thin films over a large range of doping. We find that in a large part of the phase diagr…