Kosterlitz-Thouless Transition in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_8+\delta$ Thin Films

Vortex String, Tomoko Ota, Ichiro Tsukada +2

Current-voltage ($I-V$) characteristics and the increase of superconducting transition temperature $T_c$ as a function of the number of half-unit-cell layers $n$ are studied on Bi$…