High-pressure Raman-scattering study of germanium diselenide

Popovic, ZV; Jaksic, Z; Raptis, YS; Anastassakis, E

dc.contributor.author	Popovic, ZV	en
dc.contributor.author	Jaksic, Z	en
dc.contributor.author	Raptis, YS	en
dc.contributor.author	Anastassakis, E	en
dc.date.accessioned	2014-03-01T01:13:47Z
dc.date.available	2014-03-01T01:13:47Z
dc.date.issued	1998	en
dc.identifier.issn	01631829	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12727
dc.subject	High Pressure	en
dc.subject	Raman Scattering	en
dc.title	High-pressure Raman-scattering study of germanium diselenide	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevB.57.3418	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevB.57.3418	en
heal.publicationDate	1998	en
heal.abstract	We have measured the Raman-scattering spectra of the β modification of GeSe2 at low temperatures and under hydrostatic pressures up to 8 GPa at room temperature. A total of 28 modes of symmetry Ag and 29 of symmetry Bg were resolved by polarized light-scattering measurements at 10 K. The mode frequencies harden with pressure up to 2.5 GPa. At 6.2 GPa the changes of the spectra reveal a transition to an amorphous phase. Further increase of the pressure up to 7 GPa yields strong indication of a phase transition from the disordered phase to the low-temperature modification of GeSe2. At 8 GPa, this modification transforms back to the disordered phase. All these phase transformations are reversible.	en
heal.journalName	Physical Review B - Condensed Matter and Materials Physics	en
dc.identifier.doi	10.1103/PhysRevB.57.3418	en
dc.identifier.volume	57	en
dc.identifier.issue	6	en
dc.identifier.spage	3418	en
dc.identifier.epage	3422	en