A new formulation of Gor'kov's theory of clean type II superconductors |
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Authors: | E H Brandt |
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Affiliation: | (1) Institut für Physik am Max-Planck-Institut für Metallforschung, Stuttgart, Germany |
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Abstract: | From Gor'kov's theory a functional for the free energy of the flux line lattice is derived which depends explicitly on the potentials andA. It may be interpreted as an extension of the Ginzburg-Landau functional to arbitrary temperatures. For periodic | |
2
andH=rotA, the functional is a rapidly converging series, of which often the main term (corresponding to the Brandt-Pesch-Tewordt approximation) plus a correction term depending on the lattice structure suffices. From the cutoff series all previously known results for the special casesT T
c
,B H
c2
,orB 0 are reproduced by minimization with respect to | |
2
andH. |
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Keywords: | |
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