Scale-dependent competing interactions: Sign reversal of the average persistent current

H. Bary-Soroker; O. Entin-Wohlman; Y. Imry; A. Aharony

doi:10.1103/PhysRevLett.110.056801

Scale-dependent competing interactions: Sign reversal of the average persistent current

H. Bary-Soroker, O. Entin-Wohlman, Y. Imry, A. Aharony

Department of Physics

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The interaction-induced orbital magnetic response of a nanoscale system, modeled by the persistent current in a ring geometry, is evaluated for a system which is a superconductor in the bulk. The interplay of the renormalized Coulomb and Fröhlich interactions is crucial. The diamagnetic response of the large superconductor may become paramagnetic when the finite-size-determined Thouless energy is larger than or on the order of the Debye energy.

Original language	English
Article number	056801
Journal	Physical Review Letters
Volume	110
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.110.056801
State	Published - 28 Jan 2013

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.110.056801

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abstract = "The interaction-induced orbital magnetic response of a nanoscale system, modeled by the persistent current in a ring geometry, is evaluated for a system which is a superconductor in the bulk. The interplay of the renormalized Coulomb and Fr{\"o}hlich interactions is crucial. The diamagnetic response of the large superconductor may become paramagnetic when the finite-size-determined Thouless energy is larger than or on the order of the Debye energy.",

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AU - Aharony, A.

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AB - The interaction-induced orbital magnetic response of a nanoscale system, modeled by the persistent current in a ring geometry, is evaluated for a system which is a superconductor in the bulk. The interplay of the renormalized Coulomb and Fröhlich interactions is crucial. The diamagnetic response of the large superconductor may become paramagnetic when the finite-size-determined Thouless energy is larger than or on the order of the Debye energy.

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Scale-dependent competing interactions: Sign reversal of the average persistent current

Abstract

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