A condition for first order phase transitions in quantum mechanical tunneling models

Details A condition for first order phase transitions in quantum mechanical tunneling models A condition for first order phase transitions in quantum mechanical tunneling models

1999-02-12

arxiv.org/abs/cond-mat/9902184v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, 5 figures

Scientific paper

10.1103/PhysRevB.60.6662

A criterion is derived for the determination of parameter domains of first
order phase transitions in quantum mechanical tunneling models. The criterion
is tested by application to various models, in particular to some which have
been used recently to explore spin tunneling in macroscopic particles. In each
case agreement is found with previously heuristically determined domains.

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