Observation of a non-Ohmic Hall resistivity above the critical temperature in the high-temperature superconductor YBa${}_2$Cu${}_3$O${}_{7-\delta }$

I. Puica, W. Lang, K. Siraj +2

Investigations of the resistivity and the Hall effect as a function of electric field and temperature in the normal state and upper part of the superconducting transition of an opt…