Bean-Livingston surface barriers for flux penetration in Bi(2)Sr(2)CaCu(2)O(8+delta) single crystals near the transition temperature
Mihalache, V. and Dede, M. and Oral, Ahmet and Miu, L. (2011) Bean-Livingston surface barriers for flux penetration in Bi(2)Sr(2)CaCu(2)O(8+delta) single crystals near the transition temperature. Physica C: Superconductivity and Its Applications, 471 (19-20). pp. 563-565. ISSN 0921-4534
Official URL: http://dx.doi.org/10.1016/j.physc.2011.04.015
The first field for magnetic flux penetration H in Bi(2)Sr(2)CaCu(2)O(8+delta) (Bi-2212) single crystals near the critical temperature T(c) was investigated from the local magnetic hysteresis loops registered for different magnetic field H sweeping rates by using a scanning Hall probe microscope (SHPM) with similar to 1 mu m effective spatial resolution. Evidences for a significant role of the surface barrier were obtained: the asymmetric shape of the magnetization loops and an anomalous change in the slope of H(p)(T) close to T(c).
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