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 κ is investigated. An Abrikosov lattice with the angle φ = π/3 between the unit cell vectors is shown to be unstable in a narrow range of values, 1 < κ < 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.
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References
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Original Russian Text © Yu.N. Ovchinnikov, I.M. Sigal, 2016, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 150, No. 1, pp. 135–143.
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Ovchinnikov, Y.N., Sigal, I.M. Instability of a triangular Abrikosov lattice at values of the Ginzburg–Landau parameter κ close to unity. J. Exp. Theor. Phys. 123, 119–126 (2016). https://doi.org/10.1134/S1063776116050083
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DOI: https://doi.org/10.1134/S1063776116050083