Double peaks on ac magnetization in a superconducting Pb-porous glass nanocomposite

Y. S. Ciou, C. Tien, E. V. Charnaya, D. Y. Xing, Yu A. Kumzerov, M. K. Lee, A. L. Pirozerskii

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Studies of temperature dependences of ac magnetization were carried out for a superconducting lead-porous glass nanocomposite. Double peaks were found on the imaginary part of ac magnetization which were accompanied with double steps on the real part. The lower-temperature anomalies in ac magnetization differed noticeably when they were obtained upon cooling and warming. The double peaks were treated as two phase transitions in the vortex system: the liquid-solid transition which occurs close to the onset of superconductivity and solid-solid one which is triggered by superconductivity in confined lead islands.

Original languageEnglish
Pages (from-to)4942-4944
Number of pages3
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume374
Issue number48
DOIs
Publication statusPublished - 2010 Nov 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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