Strain effects on the spectra of spontaneously ordered GaxIn1−xP
- 7 February 1994
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 64 (6) , 757-759
- https://doi.org/10.1063/1.111057
Abstract
Spontaneous (111) CuPt‐like ordering has been widely observed in GaxIn1−xP lattice matched (x=x0) to a GaAs(001) substrate. This leads to a band‐gap reduction ΔEg and to a valence‐band splitting ΔE12. We explore here the consequence of the coexistence of (001) epitaxial strain (produced by selecting x≠x0) and (111) chemical ordering. This leads to distinct changes in ΔEg and ΔE12 which could serve as new fingerprints of ordering.Keywords
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