Positive Identification of the Cr(4+)-->Cr(3+) Thermal Transition in GaAs

Authors

David C. Look, Wright State University - Main CampusFollow
S. Chaudhuri
L. Eaves

Document Type

Article

Publication Date

12-1-1982

Abstract

Temperature-dependent Hall-effect measurements on two Cr-doped GaAs samples
show a dominant center at E₁ =0.324—1.4 x 10^-4T eV, with respect to the valence-band edge. By comparison with secondary-ion mass spectroscopy measurements of the Cr concentration, and recent EPR measurements of the Cr²⁺, Cr³⁺, and Cr⁴⁺ concentration in several samples, it is shown unambiguously that this energy describes the Cr⁴⁺→Cr³⁺ transition. This is the first conclusive evidence for a charge-state transition involving Cr⁴⁺ in GaAs.

Comments

The original publication is available at http://prl.aps.org/abstract/PRL/v49/i23/p1728_1

Repository Citation

Look, D. C., Chaudhuri, S., & Eaves, L. (1982). Positive Identification of the Cr(4+)-->Cr(3+) Thermal Transition in GaAs. Physical Review Letters, 49 (23), 1728-1731.
https://corescholar.libraries.wright.edu/physics/212

DOI

10.1103/PhysRevLett.49.1728