Cooling a magnetic resonance force microscope via the dynamical back-action of nuclear spins

Details Cooling a magnetic resonance force microscope via the dynamical back-action of nuclear spins Cooling a magnetic resonance force microscope via the dynamical back-action of nuclear spins

2009-06-30

arxiv.org/abs/0906.5420v2

Phys. Rev. B. 80 (2009) 214423 (13pp)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

15 pqges, 11 figures. The last part of Section IV.A and Section IV B were rewritten. We added three new graphs: Figs. 5, 7, 9

Scientific paper

We analyze the back-action influence of nuclear spins on the motion of the cantilever of a magnetic force resonance microscope. We calculate the contribution of nuclear spins to the damping and frequency shift of the cantilever. We show that, at the Rabi frequency, the energy exchange between the cantilever and the spin system cools or heats the cantilever depending on the sign of the high-frequency detuning. We also show that the spin noise leads to a significant damping of the cantilever motion.

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