標題: Quantitative theory of thermal fluctuations and disorder in the vortex matter
作者: Li, DP
Rosenstein, B
Lin, P
電子物理學系
Department of Electrophysics
關鍵字: vortex phase diagram;melting transition;glass transition
公開日期: 1-一月-2006
摘要: A metastable supercooled homogeneous vortex liquid state exists down to zero fluctuation temperature in systems of mutually repelling objects. The zero-temperature liquid state therefore serves as a (pseudo) 'fixed point' controlling the properties of vortex liquid below and even around the melting point. Based on this picture, a quantitative theory of vortex melting and glass transition in Type II superconductors in the framework of Ginzburg-Landau approach is presented. The melting line location is determined and magnetization and specific heat jumps are calculated. The point-like disorder shifts the line downwards and joins the order-disorder transition line. On the other hand, the disorder induces irreversible effects via replica symmetry breaking. The irreversibility line can be calculated within the Gaussian variational method. Therefore, the generic phase diagram contains four phases divided by the irreversibility line and melting line: liquid, solid, vortex glass and Bragg glass. We compare various experimental results with the theoretical formula.
URI: http://dx.doi.org/10.1007/BF02704940
http://hdl.handle.net/11536/12888
ISSN: 0304-4289
DOI: 10.1007/BF02704940
期刊: PRAMANA-JOURNAL OF PHYSICS
Volume: 66
Issue: 1
起始頁: 99
結束頁: 111
顯示於類別:會議論文


文件中的檔案:

  1. 000235042300008.pdf