Davies electron-nuclear double resonance revisited: Enhanced sensitivity and nuclear spin relaxation

Alexei M. Tyryshkin, John J.L. Morton, Arzhang Ardavan, S. A. Lyon

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Over the past 50 years, electron-nuclear double resonance (ENDOR) has become a fairly ubiquitous spectroscopic technique, allowing the study of spin transitions for nuclei which are coupled to electron spins. However, the low spin number sensitivity of the technique continues to pose serious limitations. Here we demonstrate that signal intensity in a pulsed Davies ENDOR experiment depends strongly on the nuclear relaxation time T1n, and can be severely reduced for long T1n. We suggest a development of the original Davies ENDOR sequence that overcomes this limitation, thus offering dramatically enhanced signal intensity and spectral resolution. Finally, we observe that the sensitivity of the original Davies method to T1n can be exploited to measure nuclear relaxation, as we demonstrate for phosphorous donors in silicon and for endohedral fullerenes N@ C60 in C S2.

Original languageEnglish (US)
Article number234508
JournalJournal of Chemical Physics
Volume124
Issue number23
DOIs
StatePublished - Jun 21 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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