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