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related topics |
{spin, pulse, spins} |
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A new mechanism for electron spin echo envelope modulation
John J. L. Morton, Alexei M. Tyryshkin, Arzhang Ardavan, Kyriakos Porfyrakis, Stephen A. Lyon, G. Andrew D. Briggs
abstract: Electron spin echo envelope modulation (ESEEM) has been observed for the
first time from a coupled hetero-spin pair of electron and nucleus in liquid
solution. Previously, modulation effects in spin echo experiments have only
been described in liquid solutions for a coupled pair of homonuclear spins in
NMR or a pair of resonant electron spins in EPR. We observe low-frequency ESEEM
(26 and 52 kHz) due to a new mechanism present for any electron spin with S>1/2
that is hyperfine coupled to a nuclear spin. In our case these are electron
spin (S=3/2) and nuclear spin (I=1) in the endohedral fullerene N@C60. The
modulation is shown to arise from second order effects in the isotropic
hyperfine coupling of an electron and 14N nucleus.
- oai_identifier:
- oai:arXiv.org:quant-ph/0412002
- categories:
- quant-ph
- comments:
- 15 pages, 4 figures
- doi:
- 10.1063/1.1888585
- arxiv_id:
- quant-ph/0412002
- journal_ref:
- J. Chem. Phys. 122, 174504 (2005)
- created:
- 2004-12-01
Full article ▸
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