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arXiv · 0712.3792

Nuclear spin relaxation induced by a mechanical resonator

C. L. Degen·M. Poggio·H. J. Mamin·D. Rugar
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Abstract

We report on measurements of the spin lifetime of nuclear spins strongly coupled to a micromechanical cantilever as used in magnetic resonance force microscopy. We find that the rotating-frame correlation time of the statistical nuclear polarization is set by the magneto-mechanical noise originating from the thermal motion of the cantilever. Evidence is based on the effect of three parameters: (1) the magnetic field gradient (the coupling strength), (2) the Rabi frequency of the spins (the transition energy), and (3) the temperature of the low-frequency mechanical modes. Experimental results are compared to relaxation rates calculated from the spectral density of the magneto-mechanical noise.

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C. L. Degen, M. Poggio, H. J. Mamin, D. Rugar. 2007-12-21. Nuclear spin relaxation induced by a mechanical resonator. https://doi.org/10.1103/physrevlett.100.137601

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