TY - JOUR
T1 - Davies electron-nuclear double resonance revisited
T2 - Enhanced sensitivity and nuclear spin relaxation
AU - Tyryshkin, Alexei M.
AU - Morton, John J.L.
AU - Ardavan, Arzhang
AU - Lyon, S. A.
N1 - Funding Information:
The authors thank Kyriakos Porfyrakis for providing the material. The authors thank the Oxford-Princeton Link fund for support. Work at Princeton was supported by the NSF International Office through the Princeton MRSEC under Grant No. DMR-0213706 and by the ARO and ARDA under Contract No. DAAD19-02-1-0040. One of the authors (J.J.L.M.) is supported by St. John’s College, Oxford. Another author (A.A.) is supported by the Royal Society.
PY - 2006/6/21
Y1 - 2006/6/21
N2 - 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.
AB - 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.
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U2 - 10.1063/1.2204915
DO - 10.1063/1.2204915
M3 - Article
C2 - 16821930
AN - SCOPUS:33745321170
SN - 0021-9606
VL - 124
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
IS - 23
M1 - 234508
ER -