Quantum phase interference and spin parity in Mn12 single-molecule magnets

Details Quantum phase interference and spin parity in Mn12 single-molecule magnets Quantum phase interference and spin parity in Mn12 single-molecule magnets

2005-03-08

arxiv.org/abs/cond-mat/0503193v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.95.037203

Magnetization measurements of Mn12 molecular nanomagnets with spin ground states of S = 10 and S = 19/2 showresonance tunneling at avoided energy level crossings. The observed oscillations of the tunnel probability as a function of the magnetic field applied along the hard anisotropy axis are due to topological quantum phase interference of two tunnel paths of opposite windings. Spin-parity dependent tunneling is established by comparing the quantum phase interference of integer and half-integer spin systems.

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