The boson peak in Raman spectra of AsxS1-x glasses

Arsova, D; Boulmetis, YC; Raptis, C; Pamukchieva, V; Skordeva, E

dc.contributor.author	Arsova, D	en
dc.contributor.author	Boulmetis, YC	en
dc.contributor.author	Raptis, C	en
dc.contributor.author	Pamukchieva, V	en
dc.contributor.author	Skordeva, E	en
dc.date.accessioned	2014-03-01T02:43:34Z
dc.date.available	2014-03-01T02:43:34Z
dc.date.issued	2005	en
dc.identifier.issn	1063-7826	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/31484
dc.subject	Phase Separation	en
dc.subject	Raman Spectra	en
dc.subject	Spectrum	en
dc.subject	Low Frequency	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	SCATTERING	en
dc.title	The boson peak in Raman spectra of AsxS1-x glasses	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1134/1.2010693	en
heal.identifier.secondary	http://dx.doi.org/10.1134/1.2010693	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	The Raman spectra of AsxS1 - x glasses with x < 40 at % (Z < 2.4) have been studied in a wide temperature range (20-300 K). A well resolved boson peak is observed in the low-frequency portion of the spectrum, not withstanding the appearance of floppy modes in the glasses under study. It is shown that the boson peak is characterized by two parameters: intensity and the peak position. A comparison of the intensity variation for the boson peaks indicates that the degree of disorder increases as x decreases. This effect is caused by floppy modes in the glass network and by sulfur phase separation. Studies of reduced boson peaks in the Raman spectra of As xS1 - x glasses confirms the theoretical assumption that the shape of the peaks is independent of composition and temperature. © 2005 Pleiades Publishing, Inc.	en
heal.publisher	AMER INST PHYSICS	en
heal.journalName	Semiconductors	en
dc.identifier.doi	10.1134/1.2010693	en
dc.identifier.isi	ISI:000231169200018	en
dc.identifier.volume	39	en
dc.identifier.issue	8	en
dc.identifier.spage	960	en
dc.identifier.epage	962	en