Generic first-order orientation transition of vortex lattices in type II superconductors

Kenta M. Suzuki; Kenji Inoue; Predrag Miranović; Masanori Ichioka; Kazushige Machida

doi:10.1143/JPSJ.79.013702

Generic first-order orientation transition of vortex lattices in type II superconductors

Kenta M. Suzuki, Kenji Inoue, Predrag Miranović, Masanori Ichioka, Kazushige Machida

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

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.

Original language	English
Article number	013702
Journal	journal of the physical society of japan
Volume	79
Issue number	1
DOIs	https://doi.org/10.1143/JPSJ.79.013702
Publication status	Published - Jan 2010

Keywords

Anisotropic superconductors
Eilenberger theory
Nonlocal london theory
Vortex lattice transition

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.79.013702

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abstract = "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.",

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AU - Machida, Kazushige

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AB - 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.

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KW - Nonlocal london theory

KW - Vortex lattice transition

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Generic first-order orientation transition of vortex lattices in type II superconductors

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Keywords

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