Electron spin resonance identification di-carbon-related centers in irradiated silicon

S. Hayashi, H. Saito, Kohei M Itoh, M. P. Vlasenko, L. S. Vlasenko

Research output: Contribution to journalArticle

Abstract

A previously unreported electron spin resonance (ESR) spectrum was found in γ-ray irradiated silicon by the detection of the change in microwave photoconductivity arising from spin-dependent recombination (SDR). In the specially prepared silicon crystals doped by 13C isotope, a well resolved hyperfine structure of SDR-ESR lines due to the interaction between electrons and two equivalent carbon atoms having nuclear spin I = 1/2 was observed. The Si-KU4 spectrum is described by spin Hamiltonian for spin S = 1 and of g and D tensors of orthorhombic symmetry with principal values g1 = 2.008, g2 = 2.002, and g3 =2.007; and D1 = ± 103 MHz, D2 = 170 MHz, and D3 = ± 67 MHz where axes 1, 2, and 3 are parallel to the [11-0], [110], and [001] crystal axes, respectively. The hyperfine splitting arising from 13C nuclei is about 0.35 mT. A possible microstructure of the detect leading to the Si-KU4 spectrum is discussed.

Original languageEnglish
Article number161592
JournalJournal of Applied Physics
Volume123
Issue number16
DOIs
Publication statusPublished - 2018 Apr 28

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electron paramagnetic resonance
carbon
silicon
hyperfine structure
resonance lines
doped crystals
photoconductivity
nuclear spin
rays
isotopes
tensors
microwaves
microstructure
nuclei
symmetry
crystals
atoms
electrons
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Electron spin resonance identification di-carbon-related centers in irradiated silicon. / Hayashi, S.; Saito, H.; Itoh, Kohei M; Vlasenko, M. P.; Vlasenko, L. S.

In: Journal of Applied Physics, Vol. 123, No. 16, 161592, 28.04.2018.

Research output: Contribution to journalArticle

Hayashi, S. ; Saito, H. ; Itoh, Kohei M ; Vlasenko, M. P. ; Vlasenko, L. S. / Electron spin resonance identification di-carbon-related centers in irradiated silicon. In: Journal of Applied Physics. 2018 ; Vol. 123, No. 16.
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