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

W. Wernsdorfer·N. E. Chakov·G. Christou
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Abstract

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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W. Wernsdorfer, N. E. Chakov, G. Christou. 2005-03-08. Quantum phase interference and spin parity in Mn12 single-molecule magnets. https://doi.org/10.1103/physrevlett.95.037203

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