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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2006, Volume 83, Issue 12, Pages 675–680
(Mi jetpl1335)
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This article is cited in 20 scientific papers (total in 20 papers)
CONDENSED MATTER
Intervortex quasiparticle tunneling and electronic structure of multi-vortex configurations in type-II superconductors
A. S. Mel'nikov, M. A. Silaev Institute for Physics of Microstructures RAS
Abstract:
The electronic spectrum of multi-vortex configurations in type-II superconductors is studied taking account of the effect of quasiparticle tunneling between the vortex cores. The tunneling is responsible for the formation of strongly coupled quasiparticle states for intervortex distances $a<a_c$, where the critical distance $a_c$ is of the order of several coherence lengths $\xi$. Analyzing the resulting spectra of vortex clusters bonded by the quasiparticle tunneling we find a transition from a set of degenerate Caroli – de Gennes – Matricon branches to anomalous branches similar to the ones in multi-quanta giant vortices. This spectrum transformation results in the oscillatory behavior of the density of states at the Fermi level as a function of $a$ and could be observed in mesoscopic superconductors and disordered flux line arrays in the bulk systems.
Received: 22.05.2006
Citation:
A. S. Mel'nikov, M. A. Silaev, “Intervortex quasiparticle tunneling and electronic structure of multi-vortex configurations in type-II superconductors”, Pis'ma v Zh. Èksper. Teoret. Fiz., 83:12 (2006), 675–680; JETP Letters, 83:12 (2006), 578–583
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https://www.mathnet.ru/eng/jetpl1335 https://www.mathnet.ru/eng/jetpl/v83/i12/p675
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Abstract page: | 222 | Full-text PDF : | 61 | References: | 33 |
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