Temperature-induced pair correlations in clusters and nuclei
Atomic and Molecular Clusters
2009-11-10 v1
Abstract
The pair correlations in mesoscopic systems such as -size superconducting clusters and nuclei are studied at finite temperature for the canonical ensemble of fermions in model spaces with a fixed particle number: i) a degenerate spherical shell (strong coupling limit), ii) an equidistantly spaced deformed shell (weak coupling limit). It is shown that after the destruction of the pair correlations at T=0 by a strong magnetic field or rapid rotation, heating can bring them back. This phenomenon is a consequence of the fixed number of fermions in the canonical ensemble.
Cite
@article{arxiv.physics/0301036,
title = {Temperature-induced pair correlations in clusters and nuclei},
author = {S. Frauendorf and N. K. Kuzmenko and V. M. Mikhajlov and J. Sheikh},
journal= {arXiv preprint arXiv:physics/0301036},
year = {2009}
}