Journal
PHYSICAL REVIEW B
Volume 83, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.054515
Keywords
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Funding
- DOE-Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-AC02-07CH11358]
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It is shown that within the Ginzburg-Landau (GL) approximation the order parameters Delta(1)(r, T) and Delta(2)(r, T) in two-band superconductors vary on the same length scale, the difference in zero-T coherence lengths xi(0v) similar to hv(Fv)/Delta(v)(0), v = 1,2 notwithstanding. This amounts to a single physical GL parameter kappa and the classic GL dichotomy: kappa < 1/root 2 for type I and kappa > 1/root 2 for type II.
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