Nontrivial resonance of nanoscale uniaxial magnets to alternating field
Seiji Miyashita, Keiji Saito, Hans De Raedt
Abstract
How nanoscale uniaxial magnets respond to an alternating field is studied by direct numerical calculation. A nontrivial oscillation of the magnetization is found, which is analyzed in terms of the non-adiabatic transition due to the time dependent field. A new method to estimate the tunneling gap of the magnet is proposed.
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