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

Authors
Brouwer, PW Oreg, Y Halperin, BI
Citation
Pw. Brouwer et al., Mesoscopic fluctuations of the ground-state spin of a small metal particle, PHYS REV B, 60(20), 1999, pp. R13977-R13980
Citations number
25
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
20
Year of publication
1999
Pages
R13977 - R13980
Database
ISI
SICI code
0163-1829(19991115)60:20<R13977:MFOTGS>2.0.ZU;2-R
Abstract
We study the statistical distribution of the ground-state spin for an ensem ble of small metallic grains, using a random-matrix toy model. Using the Ha rtree-Fock approximation, we find that for interaction strengths well below the Stoner criterion there is already an appreciable probability that the ground state has a spin other than zero or one half. Possible relations to experiments are discussed. [S0163-1829(99)50644-9].