Raman phonon modes of zinc blende InxGa1−xN alloy epitaxial layers

Vibrational modes in epitaxial Ti1ÀxScxN„001... layers: An ab initio calculation and Raman spectroscopy study

Ti12xScxN alloys were used to investigate the effects of carrier density and the density of states ~DOS! at the Fermi level E f on vibrational modes, phonon anomalies, and superconducting transition temperatures Tc . Single-crystal Ti12xScxN layers, 2000 Å thick, with compositions spanning the entire alloy range (0<x <1), were grown on MgO~001! by ultrahigh vacuum reactive magnetron sputter dep...

Microscopic investigation of phonon modes in SiGe alloy nanocrystals

Raman study of phonon modes in bismuth pyrochlores

D. J. Arenas,1,2 L. V. Gasparov,1 Wei Qiu,3 J. C. Nino,3 Charles H. Patterson,4 and D. B. Tanner2 1Department of Physics, University of North Florida, Jacksonville, Florida 32224, USA 2Department of Physics, University of Florida, Gainesville, Florida 32611, USA 3Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, USA 4School of Physics, Trinity C...

Anharmonicity on Raman active phonon modes of LaAlO3

Far-Infrared and Raman Spectroscopy Investigation of Phonon Modes in Amorphous and Crystalline Epitaxial GeTe-Sb2Te3 Alloys

A combination of far-infrared and Raman spectroscopy is employed to investigate vibrational modes and the carrier behavior in amorphous and crystalline ordered GeTe-Sb2Te3 alloys (GST) epitaxially grown on Si(111). The infrared active GST mode is not observed in the Raman spectra and vice versa, indication of the fact that inversion symmetry is preserved in the metastable cubic phase in accorda...