Dynamic nuclear polarization of 29Si nuclei induced by Li and Li-O centers in silicon

Mohammad R. Rahman, Tatsumasa Itahashi, Marina P. Vlasenko, Leonid S. Vlasenko, Eugene E. Haller, Kohei M. Itoh

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Dynamic nuclear polarization (DNP) of 29Si nuclear spins induced by saturation of electron paramagnetic resonance (EPR) transitions of lithiumrelated centers in float zone (FZ) grown silicon is reported. Both isolated Li and Li-O complex centers showed strong EPR absorption lines in the temperature range 3.4-10 K and led to very efficient orientation of 29Si nuclear spins. The temperature dependence and time constant of 29Si DNP are investigated in detail. The 29Si DNP of 0.72% was achieved at 3.4 K by excitation of the Li-O forbidden EPR transition underillumination, corresponding to a ∼352 fold increase with respect to the thermal equilibrium polarization.

本文言語English
ページ(範囲)1030011-1030015
ページ数5
ジャーナルJapanese journal of applied physics
49
10
DOI
出版ステータスPublished - 2010 10

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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