Abstract
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 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.
- Received 8 July 1999
DOI:https://doi.org/10.1103/PhysRevB.60.R13977
©1999 American Physical Society
