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Force-detected nuclear double resonance between statistical spin polarizations

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arxiv 0812.2274 v1 pith:OWPMCVLD submitted 2008-12-12 cond-mat.stat-mech

Force-detected nuclear double resonance between statistical spin polarizations

M. Poggio , H. J. Mamin , C. L. Degen , M. H. Sherwood , D. Rugar This is my paper
classification cond-mat.stat-mech
keywords resonancespinscross-polarizationdoublefluctuationsmagneticnanometer-scalenuclear
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We demonstrate nuclear double resonance for nanometer-scale volumes of spins where random fluctuations rather than Boltzmann polarization dominate. When the Hartmann-Hahn condition is met in a cross-polarization experiment, flip-flops occur between two species of spins and their fluctuations become coupled. We use magnetic resonance force microscopy to measure this effect between 1H and 13C spins in 13C-enriched stearic acid. The development of a cross-polarization technique for statistical ensembles adds an important tool for generating chemical contrast in nanometer-scale magnetic resonance.

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