Title

Quantum tunneling of magnetization in trigonal single-molecule magnets

Authors

Authors

J. J. Liu; E. del Barco;S. Hill

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Phys. Rev. B

Keywords

INTERFERENCE; Physics, Condensed Matter

Abstract

We consider quantum tunneling of magnetization (QTM) in single-molecule magnets (SMMs) possessing idealized C-3 symmetry. We do so by mapping the spectrum of a Mn-3(III) SMM obtained via diagonalization of a multispin (three s = 2 spins) Hamiltonian onto that of a giant-spin model with spin S = 6. Rotation of the easy axes of the Mn-III atoms away from the C-3 axis leads to the emergence of the (O) over cap (3)(4) ( 1/2[(S) over cap (z), (S) over cap (3)(+) + (S) over cap (3)(-)]) operator in the giant-spin model. This unfreezes odd-k QTM resonances and generates threefold patterns of Berry-phase interference minima in all resonances, including k = 0, which shifts from zero longitudinal field.

Journal Title

Physical Review B

Volume

85

Issue/Number

1

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

4

WOS Identifier

WOS:000299422900001

ISSN

1098-0121

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