MIXED QUANTUM-THERMAL RELAXATION IN MN-12 ACETATE MOLECULES

Authors
FORT A RETTORI A VILLAIN J GATTESCHI D SESSOLI R
Citation
A. Fort et al., MIXED QUANTUM-THERMAL RELAXATION IN MN-12 ACETATE MOLECULES, Physical review letters, 80(3), 1998, pp. 612-615
Citations number
22
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
3
Year of publication
1998
Pages
612 - 615
Database
ISI
SICI code
0031-9007(1998)80:3<612:MQRIMA>2.0.ZU;2-Q
Abstract
We present a theoretical and experimental study of the magnetic field dependence of the relaxation of the Mn12O12 acetate compound. For T gr eater than or equal to 2 K the molecule which starts from the by means of thermal mechanism, while the remaining barrier is crossed by tunne ling. This mired quantum-thermal mechanism shows a critical dependence of the relaxation time with respect to the external magnetic field.