Abstract
An antiferromagnetic particle with an excess spin has 2 degrees of freedom. The one associated with is ferromagnetic, while the antiferromagnetic behavior involves Néel vector . It is shown that the spin-parity effect described by Loss et al. has to do with the ferromagnetic degree of freedom and does not imply the localization of for small enough particles for half-integer spin. It is also shown that the tunnel splitting associated with is insensitive to applied fields.
- Received 25 February 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.289
©1997 American Physical Society