標題: Field cooling memory effect in Bi2212 and Bi2223 single crystals
作者: Shaltiel, D.
von Nidda, H-A Krug
Rosenstein, B.
Shapiro, B. Ya
Golosovsky, M.
Shapiro, I.
Loidl, A.
Bogoslavsky, B.
Fujii, T.
Watanabe, T.
Tamegai, T.
電子物理學系
Department of Electrophysics
公開日期: 1-七月-2010
摘要: A memory effect in the Josephson vortex system created by a magnetic field in the highly anisotropic superconductors Bi2212 and Bi2223 is demonstrated using microwave power absorption. This surprising effect appears despite a very low viscosity of Josephson vortices compared to Abrikosov vortices. The superconductor is field-cooled in a DC magnetic field H(m) oriented parallel to the CuO planes through the critical temperature T(c) down to 4 K, with subsequent reduction of the field to zero and again above H(m). A large microwave power absorption signal is observed at a magnetic field just above the cooling field, clearly indicating a memory effect. The dependence of the signal on a deviation of the magnetic field from H(m) is the same for a wide range of H(m) from 1500 to 17 000 G.
URI: http://dx.doi.org/10.1088/0953-2048/23/7/075001
http://hdl.handle.net/11536/5214
ISSN: 0953-2048
DOI: 10.1088/0953-2048/23/7/075001
期刊: SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Volume: 23
Issue: 7
結束頁: 
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