Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-10-14
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 5 figures
Scientific paper
10.1103/PhysRevLett.101.237204
Magnetization measurements of a Mn12mda wheel single-molecule magnet with a spin ground state of S = 7 show resonant tunneling and quantum phase interference, which are established by studying the tunnel rates as a function of a transverse field applied along the hard magnetization axis. Dzyaloshinskii-Moriya (DM) exchange interaction allows the tunneling between different spin multiplets. It is shown that the quantum phase interference of these transitions is strongly dependent on the direction of the DM vector.
Christou George
Stamatatos T. C.
Wernsdorfer Wolfgang
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