Carbon concentration dependence of charged point-defect density in semi-insulating GaAs as observed by nuclear magnetic resonance

Maki Suemitsu; Masaaki Nishijima; Nobuo Miyamoto

doi:10.1063/1.103674

Carbon concentration dependence of charged point-defect density in semi-insulating GaAs as observed by nuclear magnetic resonance

Maki Suemitsu, Masaaki Nishijima, Nobuo Miyamoto

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

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Abstract

A newly developed method [J. Appl. Phys. 66, 3178 (1989)] in nuclear magnetic resonance (NMR) spin-echo measurements, which allows us a precise determination of the quadrupolar interaction magnitude in crystals, has been applied to a series of undoped, liquid-encapsulated Czochralski GaAs crystals. By varying the carbon concentration from 6×10¹⁴ to 1.4×10¹⁶ cm^-3, it was verified that the quadrupolar interaction magnitude is proportional to the density of charged point defects in the crystal. The NMR method provides a feasible tool to detect ionized point defects of the order of as low as 10¹⁴ cm^-3.

Original language	English
Pages (from-to)	398-399
Number of pages	2
Journal	Applied Physics Letters
Volume	57
Issue number	4
DOIs	https://doi.org/10.1063/1.103674
Publication status	Published - 1990
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Carbon concentration dependence of charged point-defect density in semi-insulating GaAs as observed by nuclear magnetic resonance",

abstract = "A newly developed method [J. Appl. Phys. 66, 3178 (1989)] in nuclear magnetic resonance (NMR) spin-echo measurements, which allows us a precise determination of the quadrupolar interaction magnitude in crystals, has been applied to a series of undoped, liquid-encapsulated Czochralski GaAs crystals. By varying the carbon concentration from 6×1014 to 1.4×1016 cm-3, it was verified that the quadrupolar interaction magnitude is proportional to the density of charged point defects in the crystal. The NMR method provides a feasible tool to detect ionized point defects of the order of as low as 1014 cm-3.",

author = "Maki Suemitsu and Masaaki Nishijima and Nobuo Miyamoto",

year = "1990",

doi = "10.1063/1.103674",

language = "English",

volume = "57",

pages = "398--399",

journal = "Applied Physics Letters",

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AU - Suemitsu, Maki

AU - Nishijima, Masaaki

AU - Miyamoto, Nobuo

PY - 1990

Y1 - 1990

N2 - A newly developed method [J. Appl. Phys. 66, 3178 (1989)] in nuclear magnetic resonance (NMR) spin-echo measurements, which allows us a precise determination of the quadrupolar interaction magnitude in crystals, has been applied to a series of undoped, liquid-encapsulated Czochralski GaAs crystals. By varying the carbon concentration from 6×1014 to 1.4×1016 cm-3, it was verified that the quadrupolar interaction magnitude is proportional to the density of charged point defects in the crystal. The NMR method provides a feasible tool to detect ionized point defects of the order of as low as 1014 cm-3.

AB - A newly developed method [J. Appl. Phys. 66, 3178 (1989)] in nuclear magnetic resonance (NMR) spin-echo measurements, which allows us a precise determination of the quadrupolar interaction magnitude in crystals, has been applied to a series of undoped, liquid-encapsulated Czochralski GaAs crystals. By varying the carbon concentration from 6×1014 to 1.4×1016 cm-3, it was verified that the quadrupolar interaction magnitude is proportional to the density of charged point defects in the crystal. The NMR method provides a feasible tool to detect ionized point defects of the order of as low as 1014 cm-3.

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JF - Applied Physics Letters

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Carbon concentration dependence of charged point-defect density in semi-insulating GaAs as observed by nuclear magnetic resonance

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