Field cooling memory effect in Bi2212 and Bi2223 single crystals

D. Shaltiel*, H. A Krug Von Nidda, Baruch Rosenstein, B. Ya Shapiro, M. Golosovsky, I. Shapiro, A. Loidl, B. Bogoslavsky, T. Fujii, T. Watanabe, T. Tamegai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

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 Hm oriented parallel to the CuO planes through the critical temperature Tc down to 4K, 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 Hm from 1500 to 17 000G.

Original languageEnglish
Article number075001
JournalSuperconductor Science and Technology
Volume23
Issue number7
DOIs
StatePublished - 7 Jun 2010

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