Title

Manifestation Of Spin Selection Rules On The Quantum Tunneling Of Magnetization In A Single-Molecule Magnet

Abstract

We present low temperature magnetometry measurements on a new Mn3 single-molecule magnet in which the quantum tunneling of magnetization (QTM) displays clear evidence for quantum mechanical selection rules. A QTM resonance appearing only at high temperatures demonstrates tunneling between excited states with spin projections differing by a multiple of three. This is dictated by the C3 molecular symmetry, which forbids pure tunneling from the lowest metastable state. Transverse field resonances are understood by correctly orienting the Jahn-Teller axes of the individual manganese ions and including transverse dipolar fields. These factors are likely to be important for QTM in all single-molecule magnets. © 2009 The American Physical Society.

Publication Date

8-6-2009

Publication Title

Physical Review Letters

Volume

103

Issue

1

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevLett.103.017202

Socpus ID

68749107224 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/68749107224

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