Mesoscopic fluctuations of the ground state spin of a small metal particle

Details Mesoscopic fluctuations of the ground state spin of a small metal particle Mesoscopic fluctuations of the ground state spin of a small metal particle

1999-07-09

arxiv.org/abs/cond-mat/9907148v1

Phys. Rev. B 60, 13977 (1999)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, RevTeX; 1 figure included with epsf

Scientific paper

10.1103/PhysRevB.60.R13977

We study the statistical distribution of the ground state spin for an ensemble of small metallic grains, using a random-matrix toy model. Using the Hartree Fock approximation, we find that already for interaction strengths well below the Stoner criterion there is an appreciable probability that the ground state has a finite, nonzero spin. Possible relations to experiments are discussed.

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