標題: Equilibrium first-order melting and second-order glass transitions of the vortex matter in Bi2Sr2CaCu2O8
作者: Beidenkopf, H
Avraham, N
Myasoedov, Y
Shtrikman, H
Zeldov, E
Rosenstein, B
Brandt, EH
Tamegai, T
交大名義發表
電子物理學系
National Chiao Tung University
Department of Electrophysics
公開日期: 16-Dec-2005
摘要: 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.
URI: http://dx.doi.org/10.1103/PhysRevLett.95.257004
http://hdl.handle.net/11536/12959
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.95.257004
期刊: PHYSICAL REVIEW LETTERS
Volume: 95
Issue: 25
起始頁: 0
結束頁: 0
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