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 journalArticlepeer-review

5 Citations (Scopus)

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 languageEnglish
Pages (from-to)398-399
Number of pages2
JournalApplied Physics Letters
Volume57
Issue number4
DOIs
Publication statusPublished - 1990 Dec 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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