Field-dependence of the Magnetic Relaxation in Mn12-Acetate: A New Form of Spectroscopy
Yicheng Zhong, M. P. Sarachik, Jae Yoo, D. N. Hendrickson
Abstract
We report point by point measurements below the blocking temperature of the magnetic relaxation of Mn12-acetate as a function of magnetic field applied along the easy axis of magnetization. Unexpectedly complex structure is observed which we attribute to the effect of higher-order terms of the spin Hamiltonianon on the tunneling process.
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