Electron paramagnetic resonance and dynamic nuclear polarization of 29Si nuclei in lithium-doped silicon

M. R. Rahman; L. S. Vlasenko; E. E. Haller; K. M. Itoh

doi:10.1016/j.physb.2009.08.224

Electron paramagnetic resonance and dynamic nuclear polarization of ²⁹Si nuclei in lithium-doped silicon

M. R. Rahman, L. S. Vlasenko, E. E. Haller, K. M. Itoh

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Electron paramagnetic resonance (EPR) and dynamic nuclear polarization (DNP) experiments with Li-doped FZ silicon wafers are reported. The Li related EPR spectrum of tetrahedral symmetry was detected clearly without external stress even at low temperatures (T<5 K) implying that the Li electron spin-lattice relaxation time is much shorter than that of other shallow donors, e.g. phosphorus. The solid-effect was found to be responsible for the DNP and the polarization was enhanced by a factor of 87 at 3.2 K to reach 0.17%.

Original language	English
Pages (from-to)	5060-5062
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	404
Issue number	23-24
DOIs	https://doi.org/10.1016/j.physb.2009.08.224
Publication status	Published - 2009 Dec 15

Keywords

Dynamic nuclei polarization
Electron paramagnetic resonance
Lithium donor
Silicon

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2009.08.224

Cite this

@article{a7228737f1364508991c8ee5bdd5e0b8,

title = "Electron paramagnetic resonance and dynamic nuclear polarization of 29Si nuclei in lithium-doped silicon",

abstract = "Electron paramagnetic resonance (EPR) and dynamic nuclear polarization (DNP) experiments with Li-doped FZ silicon wafers are reported. The Li related EPR spectrum of tetrahedral symmetry was detected clearly without external stress even at low temperatures (T<5 K) implying that the Li electron spin-lattice relaxation time is much shorter than that of other shallow donors, e.g. phosphorus. The solid-effect was found to be responsible for the DNP and the polarization was enhanced by a factor of 87 at 3.2 K to reach 0.17%.",

keywords = "Dynamic nuclei polarization, Electron paramagnetic resonance, Lithium donor, Silicon",

author = "Rahman, {M. R.} and Vlasenko, {L. S.} and Haller, {E. E.} and Itoh, {K. M.}",

note = "Funding Information: This work was supported in part by Grant-in-Aid for Scientific Research by MEXT Specially Promoted Research #18001002, in part by Special Coordination Funds for Promoting Science and Technology, in part by JST-DFG Strategic Cooperative Program on Nanoelectronics, and in part by a Grant-in-Aid for the Global Center of Excellence at Keio University.",

year = "2009",

month = dec,

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doi = "10.1016/j.physb.2009.08.224",

language = "English",

volume = "404",

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journal = "Physica B: Condensed Matter",

issn = "0921-4526",

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T1 - Electron paramagnetic resonance and dynamic nuclear polarization of 29Si nuclei in lithium-doped silicon

AU - Rahman, M. R.

AU - Vlasenko, L. S.

AU - Haller, E. E.

AU - Itoh, K. M.

N1 - Funding Information: This work was supported in part by Grant-in-Aid for Scientific Research by MEXT Specially Promoted Research #18001002, in part by Special Coordination Funds for Promoting Science and Technology, in part by JST-DFG Strategic Cooperative Program on Nanoelectronics, and in part by a Grant-in-Aid for the Global Center of Excellence at Keio University.

PY - 2009/12/15

Y1 - 2009/12/15

N2 - Electron paramagnetic resonance (EPR) and dynamic nuclear polarization (DNP) experiments with Li-doped FZ silicon wafers are reported. The Li related EPR spectrum of tetrahedral symmetry was detected clearly without external stress even at low temperatures (T<5 K) implying that the Li electron spin-lattice relaxation time is much shorter than that of other shallow donors, e.g. phosphorus. The solid-effect was found to be responsible for the DNP and the polarization was enhanced by a factor of 87 at 3.2 K to reach 0.17%.

AB - Electron paramagnetic resonance (EPR) and dynamic nuclear polarization (DNP) experiments with Li-doped FZ silicon wafers are reported. The Li related EPR spectrum of tetrahedral symmetry was detected clearly without external stress even at low temperatures (T<5 K) implying that the Li electron spin-lattice relaxation time is much shorter than that of other shallow donors, e.g. phosphorus. The solid-effect was found to be responsible for the DNP and the polarization was enhanced by a factor of 87 at 3.2 K to reach 0.17%.

KW - Dynamic nuclei polarization

KW - Electron paramagnetic resonance

KW - Lithium donor

KW - Silicon

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