Dynamic Oscillations of Magnetization in High Spin Magnetic Clusters

Details Dynamic Oscillations of Magnetization in High Spin Magnetic Clusters Dynamic Oscillations of Magnetization in High Spin Magnetic Clusters

2001-05-31

arxiv.org/abs/cond-mat/0105616v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Revtex, 3 pages, 6 ps figures seperately

Scientific paper

We have studied the time evolution of magnetization of a high spin magnetic cluster in the ground state, in the presence of a sinusoidal axial magnetic field and a static transverse field by explicitly solving time dependent schr\"odinger equation. We observe oscillations of magnetization in the plateau region which has all the characteristics reminiscent of the oscillation of probability of occupation of a state in a two level lattice in the presence of an oscillating electric field. The high spin of the ground state leads to a large but finite two-level pseudo-lattice. The oscillations in magnetization occur at amplitude of magnetic fields achievable in a laboratory and they also persist for a wide range of spin-dipolar interactions. Thus, our study provides a magnetic analog of the optical two-level lattice.

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