Fluctuations in a mesoscopic superconducting ring: resonant behavior of conductivity and specific heat in two mode critical regime
BUZDIN, Alexandre I.
Institut universitaire de France [IUF]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Institut universitaire de France [IUF]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
BUZDIN, Alexandre I.
Institut universitaire de France [IUF]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
< Reduce
Institut universitaire de France [IUF]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Language
en
Article de revue
This item was published in
Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2011-08-25, vol. 84, n° 6, p. 064527 (6)
American Physical Society
English Abstract
The critical fluctuations in a mesoscopic superconducting ring are studied within the Ginzburg-Landau approach. The nonlocal conductivity as well as the specific heat are calculated as functions of the magnetic flux $\Phi$ ...Read more >
The critical fluctuations in a mesoscopic superconducting ring are studied within the Ginzburg-Landau approach. The nonlocal conductivity as well as the specific heat are calculated as functions of the magnetic flux $\Phi$ through the ring. At $\Phi=\Phi_0/2$ two low-energy eigenstates become degenerate and near this point the behavior of fluctuations-dependent quantities change dramatically: both the zero Fourier component $\sigma_0$ of the fluctuation conductivity and the specific heat become non-monotonic functions of $|\Phi-\Phi_0/2|$ with rather special resonant structure.Read less <
Origin
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