We use millimeter wave radiation to manipulate the populations of the energy levels of a single crystal molecular magnet Fe8. When a continuous wave radiation is in resonance with the transitions from the ground state to the first excited state, the equilibrium magnetization exhibits a dip. The position of this dip varies linearly with the radiation frequency. Our results provide a lower bound of 0.17 ns for transverse relaxation time and suggest the possibility that single-molecule magnets might be utilized for quantum computation.
@article{arxiv.cond-mat/0404448,
title = {Photon-Induced Magnetization Reversal in Single-Molecule Magnets},
author = {M. Bal and Jonathan R. Friedman and Y. Suzuki and K. Mertes and E. M. Rumberger and D. N. Hendrickson and Y. Myasoedov and H. Shtrikman and N. Avraham and E. Zeldov},
journal= {arXiv preprint arXiv:cond-mat/0404448},
year = {2009}
}