DYNAMIC PROPERTIES OF GA1-XINXAS SOLID-SOLUTIONS - INFLUENCE OF LOCALDISTORTION EFFECTS

Citation
G. Landa et al., DYNAMIC PROPERTIES OF GA1-XINXAS SOLID-SOLUTIONS - INFLUENCE OF LOCALDISTORTION EFFECTS, Solid state communications, 86(6), 1993, pp. 351-355
Citations number
40
Categorie Soggetti
Physics, Condensed Matter
Journal title
ISSN journal
00381098
Volume
86
Issue
6
Year of publication
1993
Pages
351 - 355
Database
ISI
SICI code
0038-1098(1993)86:6<351:DPOGS->2.0.ZU;2-A
Abstract
Polarization measurements on Raman spectra of Ga1-xInxAs solid solutio ns are performed over a wide energy range (10 cm-1 - 600 cm-1) for sev eral concentrations (x = 0, 0.09, 0.20, 0.40, 0.53, 1). They show that this system follows the so-called ''two-mode behaviour''. The predomi nance of the GaAs band in the Raman spectra and the large splitting of the two longwavelength optical GaAs modes over a large range of compo sition are correlated to the enhancement of the coupling between the t wo types of oscillators by local distortion effects.