Structural properties of a GaNxP1-x alloy: Raman studies
2001 (English)In: Applied Physics Letters, ISSN 0003-6951, Vol. 78, no 25, 3959- p.Article in journal (Refereed) Published
Raman measurements in backscattering configuration are employed to characterize the effect of nitrogen on the structural properties of a GaNxP1-x alloy with x<=3%. The following effects of N incorporation on the vibrational spectra of GaNP are observed. First, frequencies of GaP-like and GaN-like longitudinal optical phonons exhibit strong compositional dependence, due to a combined effect of alloying and biaxial strain. Second, a dramatic quenching of two-phonon Raman scattering and an emergence of zone-edge GaP-like vibrations are observed. These effects are tentatively attributed to a local distortion of the GaNP lattice and/or compositional disorder in the alloy.
Place, publisher, year, edition, pages
2001. Vol. 78, no 25, 3959- p.
IdentifiersURN: urn:nbn:se:liu:diva-45103DOI: 10.1063/1.1380244Local ID: 79712OAI: oai:DiVA.org:liu-45103DiVA: diva2:265965