Bean-Livingston surface barriers for flux penetration in Bi 2Sr 2CaCu 2O 8+δ single crystals near the transition temperature
Date
2011
Authors
Mihalache V.
Dede, M.
Oral, A.
Miu L.
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Source Title
Physica C: Superconductivity and its Applications
Print ISSN
0921-4534
Electronic ISSN
Publisher
Volume
471
Issue
19-20
Pages
563 - 565
Language
English
Type
Journal Title
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Abstract
The first field for magnetic flux penetration H p in Bi 2Sr 2CaCu 2O 8+δ (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 ∼1 μm 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. © 2011 Elsevier B.V. All rights reserved.
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Keywords
Bi-2212 , Magnetization loops , SHPM , Surface barriers , Bean-Livingston surface barrier , Bi-2212 , Critical temperatures , Different-magnetic fields , Flux penetration , Magnetic flux penetration , Magnetization loops , Scanning hall probes , SHPM , Spatial resolution , Surface barrier , Surface barriers , Sweeping rate , Diffractive optics , Hysteresis loops , Magnetic fields , Magnetic flux , Magnetic materials , Magnetization , Single crystals