Magnetoluminescence study on the effective mass anisotropy of CuPt{sub B}-ordered GaInP{sub 2} alloys

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.363938· OSTI ID:467234

Ernst, P; Zhang, Y; Driessen, F A; Mascarenhas, A ^[1]; Jones, E D ^[2]; Geng, C; Scholz, F; Schweizer, H ^[3]

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1. National Renewable Energy Laboratory, Golden, Colorado 80401 (United States)
2. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
3. 4. Physikalisches Institut, Universitaet Stuttgart, 70550 (Germany)

Photoluminescence measurements in a magnetic field between 0 and 13.6 T were carried out on CuPt{sub B}-ordered GaInP at liquid-helium temperature. Four samples of different degrees of ordering ({eta}, varying from 0 to 0.54) were studied. Experimental results show that the ordering not only induces a band-gap reduction and valence-band splitting, it also causes changes in effective masses and an effective mass anisotropy. By measuring and analyzing the magnetoluminescence with the magnetic field aligned along both ordering (the [{bar 1}11]) and growth (the [001]) directions, we demonstrate that, for the band-edge excitonic state, the reduced mass in the plane perpendicular to the ordering direction is smaller than that in the ordering direction and also smaller than that of a disordered alloy. The exciton binding energy is found nearly independent of the degree of ordering, in agreement with theoretical predictions. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: National Renewable Energy Laboratory
• DOE Contract Number: AC36-83CH10093
• OSTI ID: 467234
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 6 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BINDING ENERGY
EFFECTIVE MASS
ELECTRONIC STRUCTURE
ENERGY GAP
EXCITONS
GALLIUM PHOSPHIDES
INDIUM PHOSPHIDES
MAGNETO-OPTICAL EFFECTS
PHOTOLUMINESCENCE