Asymmetric Berry-Phase Interference Patterns in a Single-Molecule Magnet
Mesoscale and Nanoscale Physics
2011-06-02 v1
Abstract
A Mn4 single-molecule magnet displays asymmetric Berry-phase interference patterns in the transverse-field (HT) dependence of the magnetization tunneling probability when a longitudinal field (HL) is present, contrary to symmetric patterns observed for HL=0. Reversal of HL results in a reflection of the transverse-field asymmetry about HT=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.
Cite
@article{arxiv.1106.0258,
title = {Asymmetric Berry-Phase Interference Patterns in a Single-Molecule Magnet},
author = {H. M. Quddusi and J. Liu and S. Singh and K. J. Heroux and E. del Barco and S. Hill and D. N. Hendrickson},
journal= {arXiv preprint arXiv:1106.0258},
year = {2011}
}
Comments
4 double-column pages