Instability of a triangular Abrikosov lattice at values of the Ginzburg-Landau 
parameter kappa close to unity

Ovchinnikov, Yury Nikolaevich; Sigal, I. M.

doi:10.1134/S1063776116050083

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Instability of a triangular Abrikosov lattice at values of the Ginzburg-Landau parameter kappa close to unity

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Ovchinnikov, Yury Nikolaevich
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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http://link.springer.com/article/10.1134/S1063776116050083
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Citation

Ovchinnikov, Y. N., & Sigal, I. M. (2016). Instability of a triangular Abrikosov lattice at values of the Ginzburg-Landau parameter kappa close to unity. Journal of Experimental and Theoretical Physics - JETP, 123(1), 119-126. doi:10.1134/S1063776116050083.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-A171-D

Abstract

The "soft" transverse mode of gapless excitations related to the deformation of a triangular Abrikosov lattice with a single flux quantum per unit cell at an arbitrary value of the Ginzburg-Landau parameter kappa is investigated. An Abrikosov lattice with the angle phi = pi/3 between the unit cell vectors is shown to be unstable in a narrow range of values, 1 < kappa < 1.000634. The excitation spectrum of the mode under consideration at low values of the momentum k (in the k (2) approximation) is isotropic at k lying in a plane perpendicular to the magnetic field.