Title

Asymmetric Berry-Phase Interference Patterns in a Single-Molecule Magnet

Authors

Authors

H. M. Quddusi; J. Liu; S. Singh; K. J. Heroux; E. del Barco; S. Hill;D. N. Hendrickson

Comments

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Abbreviated Journal Title

Phys. Rev. Lett.

Keywords

Physics, Multidisciplinary

Abstract

A Mn(4) single-molecule magnet displays asymmetric Berry-phase interference patterns in the transverse-field (H(T)) dependence of the magnetization tunneling probability when a longitudinal field (H(L)) is present, contrary to symmetric patterns observed for H(L) = 0. Reversal of H(L) results in a reflection of the transverse-field asymmetry about H(T) = 0, as expected on the basis of the time-reversal invariance of the spin-orbit Hamiltonian which is responsible for the tunneling oscillations. A fascinating motion of Berry-phase minima within the transverse-field magnitude-direction phase space results from a competition between noncollinear magnetoanisotropy tensors at the two distinct Mn sites.

Journal Title

Physical Review Letters

Volume

106

Issue/Number

22

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

4

WOS Identifier

WOS:000291093600013

ISSN

0031-9007

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