Dynamic Tunneling Polarization as a Quantum Rotor Analogue of Dynamic Nuclear Polarization and the NMR Solid Effect

A. J. Horsewill and S. M. M. Abu-Khumra
Phys. Rev. Lett. 107, 127602 – Published 16 September 2011

Abstract

The populations of the tunneling states of CH3 are manipulated by rf irradiation of weakly allowed sideband transitions within the manifold of tunneling-magnetic levels. Substantial positive and negative CH3 tunneling polarizations are observed, providing a quantum rotor analogue of dynamic nuclear polarization and the solid effect in NMR. The field-cycling NMR technique used in the experiments employs level crossings between tunneling and Zeeman systems to report on the tunneling polarization. The tunneling lifetimes are measured and the field dependence investigated.

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  • Received 7 April 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.127602

© 2011 American Physical Society

Authors & Affiliations

A. J. Horsewill* and S. M. M. Abu-Khumra

  • School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom

  • *Author to whom correspondence should be addressed. a.horsewill@nottingham.ac.uk

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Issue

Vol. 107, Iss. 12 — 16 September 2011

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