Phase diagram of disordered vortices from London Langevin simulations

被引：69

作者：

van Otterlo, A ^{[1
]}

Scalettar, RT ^{[1
]}

Zimanyi, GT ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Phys, Livermore, CA 95616 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.81.1497

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the phase diagram of vortex matter in disordered type-II superconductors. We performed numerical simulations in the London Langevin approximation, using a new realistic representation of the disorder. At low magnetic fields we find a disentangled and dislocation-free Bragg glass regime. Increasing the field introduces disorder-driven entanglement, leading to a vortex glass phase. Increasing temperature melts both glasses into a vortex liquid. The phase boundaries are in quantitative agreement with the experimental data.

引用

页码：1497 / 1500

页数：4

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