title: S mixing and quantum tunneling of the magnetization in molecular nanomagnets.
abstract: The role of S mixing in the quantum tunneling of the magnetization in nanomagnets has been investigated. We show that the effect on the tunneling frequency is huge and that the discrepancy (more than 3 orders of magnitude in the tunneling frequency) between spectroscopic and relaxation measurements in Fe(8) can be resolved if S mixing is taken into account.
authors.affiliation: Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica, Università di Parma, I-43100 Parma, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Carretta
authors.forename: E
authors.initials: E
authors.lastname: Liviotti
authors.forename: N
authors.initials: N
authors.lastname: Magnani
authors.forename: P
authors.initials: P
authors.lastname: Santini
authors.forename: G
authors.initials: G
authors.lastname: Amoretti