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Title: Structural transitions in vortex systems with anisotropic interactions

Abstract

We introduce a model of vortices in type-II superconductors with a four-fold anisotropy in the vortex–vortex interaction potential. Using numerical simulations we show that the vortex lattice undergoes structural transitions as the anisotropy is increased, with a triangular lattice at low anisotropy, a rhombic intermediate state, and a square lattice for high anisotropy. In some cases we observe a multi-q state consisting of an Archimedean tiling that combines square and triangular local ordering. At very high anisotropy, domains of vortex chain states appear. We discuss how this model can be generalized to higher order anisotropy as well as its applicability to other particle-based systems with anisotropic particle–particle interactions.

Authors:
; ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1437812
Alternate Identifier(s):
OSTI ID: 1422923
Report Number(s):
LA-UR-17-26985
Journal ID: ISSN 1367-2630
Grant/Contract Number:  
AC52-06NA25396; SC0005051
Resource Type:
Published Article
Journal Name:
New Journal of Physics
Additional Journal Information:
Journal Name: New Journal of Physics Journal Volume: 20 Journal Issue: 2; Journal ID: ISSN 1367-2630
Publisher:
IOP Publishing
Country of Publication:
United Kingdom
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Material Science

Citation Formats

Olszewski, M. W., Eskildsen, M. R., Reichhardt, C., and Reichhardt, C. J. O. Structural transitions in vortex systems with anisotropic interactions. United Kingdom: N. p., 2018. Web. doi:10.1088/1367-2630/aaa472.
Olszewski, M. W., Eskildsen, M. R., Reichhardt, C., & Reichhardt, C. J. O. Structural transitions in vortex systems with anisotropic interactions. United Kingdom. https://doi.org/10.1088/1367-2630/aaa472
Olszewski, M. W., Eskildsen, M. R., Reichhardt, C., and Reichhardt, C. J. O. Thu . "Structural transitions in vortex systems with anisotropic interactions". United Kingdom. https://doi.org/10.1088/1367-2630/aaa472.
@article{osti_1437812,
title = {Structural transitions in vortex systems with anisotropic interactions},
author = {Olszewski, M. W. and Eskildsen, M. R. and Reichhardt, C. and Reichhardt, C. J. O.},
abstractNote = {We introduce a model of vortices in type-II superconductors with a four-fold anisotropy in the vortex–vortex interaction potential. Using numerical simulations we show that the vortex lattice undergoes structural transitions as the anisotropy is increased, with a triangular lattice at low anisotropy, a rhombic intermediate state, and a square lattice for high anisotropy. In some cases we observe a multi-q state consisting of an Archimedean tiling that combines square and triangular local ordering. At very high anisotropy, domains of vortex chain states appear. We discuss how this model can be generalized to higher order anisotropy as well as its applicability to other particle-based systems with anisotropic particle–particle interactions.},
doi = {10.1088/1367-2630/aaa472},
journal = {New Journal of Physics},
number = 2,
volume = 20,
place = {United Kingdom},
year = {2018},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1088/1367-2630/aaa472

Citation Metrics:
Cited by: 3 works
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Works referencing / citing this record:

Structural transition kinetics and activated behavior in the superconducting vortex lattice
journal, February 2019