Hyperfine structure of the electron spin resonance of phosphorus-doped Si nanocrystals

Hyperfine structure of the electron spin resonance of phosphorus-doped Si nanocrystals

Electronic states of P donors in Si nanocrystals (nc-Si) embedded in insulating glass matrices have been studied by electron spin resonance. Doping of P donors into nc-Si was demonstrated by the observation of optical absorption in the infrared region due to intraconduction band transitions. P hyper...

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Veröffentlicht in:Physical review letters 2002-11, Vol.89 (20), p.206805-206805, Article 206805
Hauptverfasser: Fujii, Minoru, Mimura, Atsushi, Hayashi, Shinji, Yamamoto, Yoshiaki, Murakami, Kouichi
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container_title Physical review letters
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creator Fujii, Minoru
Mimura, Atsushi
Hayashi, Shinji
Yamamoto, Yoshiaki
Murakami, Kouichi
description Electronic states of P donors in Si nanocrystals (nc-Si) embedded in insulating glass matrices have been studied by electron spin resonance. Doping of P donors into nc-Si was demonstrated by the observation of optical absorption in the infrared region due to intraconduction band transitions. P hyperfine structure (hfs) was successfully observed at low temperatures. The observed splitting of the hfs was found to be much larger than that of the bulk Si:P and depended strongly on the size of nc-Si. The observed strong size dependence indicates that the enhancement of the hyperfine splitting is caused by the quantum confinement of P donors in nc-Si.
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title Hyperfine structure of the electron spin resonance of phosphorus-doped Si nanocrystals
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