Low temperature vortex phase diagram of Bi2Sr2CaCu2O8 : a magnetic penetration depth study
arXiv:cond-mat/0003254 · doi:10.1016/S0921-4534(00)00814-5
Abstract
We report measurements of the magnetic penetration depth λ_m(T) in the presence of a DC magnetic field in optimally doped BSCCO-2212 single crystals. Warming, after magnetic field is applied to a zero-field cooled sample, results in a non-monotonic λ_m(T), which does not coincide with a curve obtained upon field cooling, thus exhibiting a hysteretic behaviour. We discuss the possible relation of our results to the vortex decoupling, unbinding, and dimensional crossover.
M2S-HTSC-VI