Phys. Rev. Lett. 102, 087604 (2009) [4 pages]Nuclear Double Resonance between Statistical Spin Polarizations
See accompanying Physics Synopsis 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.087604
DOI:
10.1103/PhysRevLett.102.087604
PACS:
76.70.−r, 05.40.−a, 68.37.Rt, 76.60.Pc
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