Generic First-Order Orientation Transition of Vortex Lattices in Type II Superconductors

被引：25

作者：

Suzuki, Kenta M. ^{[1
]}

Inoue, Kenji ^{[1
]}

Miranovic, Predrag ^{[2
]}

Ichioka, Masanori ^{[1
]}

Machida, Kazushige ^{[1
]}

机构：

[1] Okayama Univ, Dept Phys, Okayama 7008530, Japan

[2] Univ Montenegro, Dept Phys, Podgorica 81000, Montenegro

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2010年 / 79卷 / 01期

关键词：

vortex lattice transition; anisotropic superconductors; Eilenberger theory; nonlocal London theory; FLUX-LINE-LATTICE; FIELD;

D O I：

10.1143/JPSJ.79.013702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first-order transition of vortex lattices (VLs) observed in various superconductors with fourfold symmetry is explained microscopically by quasi-classical Eilenberger theory combined with nonlocal London theory. This transition is intrinsic in the generic successive VL phase transition due to either gap anisotropy or Fermi velocity anisotropy. This is also suggested by the electronic states around vortices. Ultimately, the origin of this phenomenon is attributed to somewhat hidden frustrations of a spontaneous symmetry-broken hexagonal VL in the underlying fourfold crystalline symmetry.

引用

页数：4

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