Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2005-12-14
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
3 RevTeX pages, including 3 eps figures. The paper will appear in the Journal of Applied Physics as MMM'05 conference proceedi
Scientific paper
10.1063/1.2173215
We describe an experiment aimed at measuring the spin dynamics of the Fe8 single-molecule magnet in the presence of pulsed microwave radiation. In earlier work, heating was observed after a 0.2-ms pulse of intense radiation, indicating that the spin system and the lattice were out of thermal equilibrium at millisecond time scale [Bal et al., Europhys. Lett. 71, 110 (2005)]. In the current work, an inductive pick-up loop is used to probe the photon-induced magnetization dynamics between only two levels of the spin system at much shorter time scales (from ns to us). The relaxation time for the magnetization, induced by a pulse of radiation, is found to be on the order of 10 us.
Bal M.
Friedman Jonathan R.
Hendrickson David N.
Rumberger Evan M.
Tuominen Mark T.
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