Electron paramagnetic resonance and dynamic nuclear polarization via the photoexcited triplet states of radiation defects in natural and 29Si isotope enriched silicon

L. S. Vlasenko, M. P. Vlasenko, D. S. Poloskin, R. Laiho, H. Hayashi, T. Itahashi, A. Sagara, Kohei M Itoh

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8 Citations (Scopus)

Abstract

Electron paramagnetic resonance (EPR) of the triplet centers and dynamic 29Si nuclear polarization was studied in irradiated naturally abounded (4.7%) and 29Si isotope enriched (99.3%) silicon crystals. Saturation of the EPR lines of the photoexcited triplet centers with nonequilibrium spin polarization between ms = +1, 0, and -1 sates leads to the nuclear polarization ≈7000 times higher than equilibrium value. It was shown that the observed dynamic nuclear polarization is a result of the "solid-effect".

Original languageEnglish
Pages (from-to)4376-4379
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume3
Issue number12
DOIs
Publication statusPublished - 2006

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silicon isotopes
atomic energy levels
electron paramagnetic resonance
defects
polarization
radiation
resonance lines
isotopes
saturation
silicon
crystals

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Electron paramagnetic resonance and dynamic nuclear polarization via the photoexcited triplet states of radiation defects in natural and 29Si isotope enriched silicon. / Vlasenko, L. S.; Vlasenko, M. P.; Poloskin, D. S.; Laiho, R.; Hayashi, H.; Itahashi, T.; Sagara, A.; Itoh, Kohei M.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 3, No. 12, 2006, p. 4376-4379.

Research output: Contribution to journalArticle

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abstract = "Electron paramagnetic resonance (EPR) of the triplet centers and dynamic 29Si nuclear polarization was studied in irradiated naturally abounded (4.7{\%}) and 29Si isotope enriched (99.3{\%}) silicon crystals. Saturation of the EPR lines of the photoexcited triplet centers with nonequilibrium spin polarization between ms = +1, 0, and -1 sates leads to the nuclear polarization ≈7000 times higher than equilibrium value. It was shown that the observed dynamic nuclear polarization is a result of the {"}solid-effect{"}.",
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AU - Vlasenko, L. S.

AU - Vlasenko, M. P.

AU - Poloskin, D. S.

AU - Laiho, R.

AU - Hayashi, H.

AU - Itahashi, T.

AU - Sagara, A.

AU - Itoh, Kohei M

PY - 2006

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AB - Electron paramagnetic resonance (EPR) of the triplet centers and dynamic 29Si nuclear polarization was studied in irradiated naturally abounded (4.7%) and 29Si isotope enriched (99.3%) silicon crystals. Saturation of the EPR lines of the photoexcited triplet centers with nonequilibrium spin polarization between ms = +1, 0, and -1 sates leads to the nuclear polarization ≈7000 times higher than equilibrium value. It was shown that the observed dynamic nuclear polarization is a result of the "solid-effect".

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