Anomalous temperature dependence of the first critical field of a ceramic high-Tc superconductor
Baranov M.A., Gorbachev V.S., Senatorov A.V.
Mean-field equations are constructed to describe a model of a granular superconductor at nonzero temperatures. The temperature dependence of the first critical field, #cl (Τ), is analyzed. It should have an inflection point.