TY - JOUR
T1 - Electron spin resonance identification di-carbon-related centers in irradiated silicon
AU - Hayashi, S.
AU - Saito, H.
AU - Itoh, K. M.
AU - Vlasenko, M. P.
AU - Vlasenko, L. S.
N1 - Funding Information:
We thank Professor G. D. Watkins for the sample enriched by 13C isotope. This work was supported by the JSPS Core-to-Core Program and Spin RNJ.
Publisher Copyright:
© 2018 Author(s).
PY - 2018/4/28
Y1 - 2018/4/28
N2 - 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.
AB - 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.
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U2 - 10.1063/1.5010234
DO - 10.1063/1.5010234
M3 - Article
AN - SCOPUS:85041818735
SN - 0021-8979
VL - 123
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 16
M1 - 161592
ER -