Force-detected nuclear double resonance between statistical spin polarizations

Details Force-detected nuclear double resonance between statistical spin polarizations Force-detected nuclear double resonance between statistical spin polarizations

2008-12-12

arxiv.org/abs/0812.2274v1

Phys.Rev.Lett.102:087604,2009

Physics

Condensed Matter

Statistical Mechanics

14 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.102.087604

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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