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Near-Zero-Field Nuclear Magnetic Resonance

M. P. Ledbetter, T. Theis, J. W. Blanchard, H. Ring, P. Ganssle, S. Appelt, B. Blümich, A. Pines, and D. Budker
Phys. Rev. Lett. 107, 107601 – Published 1 September 2011
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Abstract

We investigate nuclear magnetic resonance (NMR) in near zero field, where the Zeeman interaction can be treated as a perturbation to the electron mediated scalar interaction (J coupling). This is in stark contrast to the high-field case, where heteronuclear J couplings are normally treated as a small perturbation. We show that the presence of very small magnetic fields results in splitting of the zero-field NMR lines, imparting considerable additional information to the pure zero-field spectra. Experimental results are in good agreement with first-order perturbation theory and with full numerical simulation when perturbation theory breaks down. We present simple rules for understanding the splitting patterns in near-zero-field NMR, which can be applied to molecules with nontrivial spectra.

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  • Received 13 June 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.107601

© 2011 American Physical Society

Synopsis

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Magnetic scans with a tiny magnet

Published 1 September 2011

To complement normal NMR spectroscopy performed in high magnetic fields, researchers are developing a technique that works in nearly zero fields.

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Authors & Affiliations

M. P. Ledbetter1,*, T. Theis2,3, J. W. Blanchard2,3, H. Ring2,3, P. Ganssle2,3, S. Appelt4, B. Blümich5, A. Pines2,3, and D. Budker1,6

  • 1Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA
  • 2Department of Chemistry, University of California at Berkeley, Berkeley, California 94720-3220, USA
  • 3Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 4Central Institute for Electronics, Research Center Jülich, D-52425 Jülich, Germany
  • 5Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52056 Aachen, Germany
  • 6Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

  • *ledbetter@berkeley.edu

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Issue

Vol. 107, Iss. 10 — 2 September 2011

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