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

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

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Article number056801
JournalPhysical Review Letters
Volume110
Issue number5
DOIs
StatePublished - 28 Jan 2013

Fingerprint

Dive into the research topics of 'Scale-dependent competing interactions: Sign reversal of the average persistent current'. Together they form a unique fingerprint.

Cite this