Vortex solid phase with frozen undulations in superconducting Josephson-junction arrays in external magnetic fields
Statistical Mechanics
2015-05-18 v3 Soft Condensed Matter
Superconductivity
Abstract
A vortex solid with self-generated randomness is found theoretically in a frustrated Josephson junction array (JJA) under external magnetic field with anisotropic couplings. Vorticies induced by external magnetic field develop stripes parallel to the direction of weaker coupling. It is shown analytically that there is a continuous, gapless band of metastable states in which stripes are deformed randomly by transverse undulation. The vortex solid with the frozen undulation in a metastable state freely slides along the direction of stronger coupling, thereby destroying ordering of phases even at zero temperature, but is jammed along the direction of weaker coupling.
Keywords
Cite
@article{arxiv.1004.0585,
title = {Vortex solid phase with frozen undulations in superconducting Josephson-junction arrays in external magnetic fields},
author = {Hajime Yoshino and Tomoaki Nogawa and Bongsoo Kim},
journal= {arXiv preprint arXiv:1004.0585},
year = {2015}
}
Comments
4 pages, 3 figures. To appear in Phys. Rev. Lett