Equilibrium first-order melting and second-order glass transitions of the vortex matter in Bi2Sr2CaCu2O8

H. Beidenkopf*, N. Avraham, Y. Myasoedov, H. Shtrikman, E. Zeldov, Baruch Rosenstein, E. H. Brandt, T. Tamegai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

The thermodynamic H-T phase diagram of Bi2Sr2CaCu2O8 was mapped by measuring local equilibrium magnetization M(H,T) in the presence of vortex shaking. Two equally sharp first-order magnetization steps are revealed in a single temperature sweep, manifesting a liquid-solid-liquid sequence. In addition, a second-order glass transition line is revealed by a sharp break in the equilibrium M(T) slope. The first- and second-order lines intersect at intermediate temperatures, suggesting the existence of four phases: Bragg glass and vortex crystal at low fields, glass and liquid at higher fields.

Original languageEnglish
Article number257004
JournalPhysical Review Letters
Volume95
Issue number25
DOIs
StatePublished - 16 Dec 2005

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