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Thermodynamic and spectral properties of ultrasmall superconducting grains

Thermodynamic and spectral properties of ultrasmall superconducting grains We study the problem of superconductivity in the canonicalensemble which applies to recent experiments on metallicnanoparticles. Spectral properties which can be expressed asuniversal functions allow a quantitative characterization ofthe crossover to “superconductivity” in finite metallicsystems. Parity effects in the ground state and excitationspectrum are discussed. We discuss the thermodynamicquantities as well. The susceptibility for odd grains shows areentrant behavior with temperature. This behavior may be anobservable signature of superconducting correlations inultrasmall grains. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

Thermodynamic and spectral properties of ultrasmall superconducting grains

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References (11)

Publisher
Springer Journals
Copyright
Copyright © 2000 by Plenum Publishing Corporation
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1023/A:1004689916830
Publisher site
See Article on Publisher Site

Abstract

We study the problem of superconductivity in the canonicalensemble which applies to recent experiments on metallicnanoparticles. Spectral properties which can be expressed asuniversal functions allow a quantitative characterization ofthe crossover to “superconductivity” in finite metallicsystems. Parity effects in the ground state and excitationspectrum are discussed. We discuss the thermodynamicquantities as well. The susceptibility for odd grains shows areentrant behavior with temperature. This behavior may be anobservable signature of superconducting correlations inultrasmall grains.

Journal

Journal of Low Temperature Physics – Springer Journals

Published: Oct 8, 2004

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