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Vortex Lattice Structural Transitions: a Ginzburg-Landau Model Approach

A. D. Klironomos·Alan T. Dorsey
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Abstract

We analyze the rhombic to square vortex lattice phase transition in anisotropic superconductors using a variant of Ginzburg-Landau (GL) theory. The mean-field phase diagram is determined to second order in the anisotropy parameter, and shows a reorientation transition of the square vortex lattice with respect to the crystal lattice. We then derive the long-wavelength elastic moduli of the lattices, and use them to show that thermal fluctuations produce a reentrant rhombic to square lattice transition line, similar to recent studies which used a nonlocal London model.

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A. D. Klironomos, Alan T. Dorsey. 2003-07-22. Vortex Lattice Structural Transitions: a Ginzburg-Landau Model Approach. https://doi.org/10.1103/physrevlett.91.097002

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