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  • PhysRevLett.95.105502

    Rights statement: © 2005 The American Physical Society

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Importance of quantum tunneling in vacancy-hydrogen complexes in diamond

Research output: Contribution to journalJournal article

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  • M. J. Shaw
  • P. R. Briddon
  • J. P. Goss
  • M. J. Rayson
  • Andrew Kerridge
  • A. H. Harker
  • A. M. Stoneham
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Article number105502
<mark>Journal publication date</mark>2/09/2005
<mark>Journal</mark>Physical review letters
Issue number10
Volume95
Number of pages4
Publication statusPublished
Original languageEnglish

Abstract

Our ab initio calculations of the hyperfine parameters for negatively charged vacancy-hydrogen and nitrogen-vacancy-hydrogen complexes in diamond compare static defect models and models which account for the quantum tunneling behavior of hydrogen. The static models give rise to hyperfine splittings that are inconsistent with the experimental electron paramagnetic resonance data. In contrast, the hyperfine parameters for the quantum dynamical models are in agreement with the experimental observations. We show that the quantum motion of the proton is crucial to the prediction of symmetry and hyperfine constants for two simple defect centers in diamond. Static a priori methods fail for these systems.

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© 2005 The American Physical Society