On the nature of the laser irradiation induced reversible softening of phonon modes in C60 single crystals

Meletov, KP; Liarokapis, E; Arvanitidis, J; Papagelis, K; Palles, D; Kourouklis, GA; Ves, S

dc.contributor.author	Meletov, KP	en
dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Arvanitidis, J	en
dc.contributor.author	Papagelis, K	en
dc.contributor.author	Palles, D	en
dc.contributor.author	Kourouklis, GA	en
dc.contributor.author	Ves, S	en
dc.date.accessioned	2014-03-01T01:13:58Z
dc.date.available	2014-03-01T01:13:58Z
dc.date.issued	1998	en
dc.identifier.issn	0009-2614	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12817
dc.subject	Numerical Calculation	en
dc.subject	Single Crystal	en
dc.subject	Temperature Distribution	en
dc.subject	Thermal Conductivity	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Physics, Atomic, Molecular & Chemical	en
dc.subject.other	RAMAN-SPECTROSCOPY	en
dc.subject.other	THERMAL-CONDUCTIVITY	en
dc.subject.other	ABSORPTION-SPECTRA	en
dc.subject.other	SCATTERING	en
dc.subject.other	FILMS	en
dc.subject.other	BEAM	en
dc.subject.other	TRANSITION	en
dc.subject.other	PRESSURES	en
dc.subject.other	C60	en
dc.title	On the nature of the laser irradiation induced reversible softening of phonon modes in C60 single crystals	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0009-2614(98)00495-3	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0009-2614(98)00495-3	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	The average temperature rise in the laser excitation spot of the C-60 single crystal has been determined using the Stokes to anti-Stokes integrated peak intensity ratio for the H-g(1) phonon mode. The reversible softening of the A(g)(2) pentagon pinch mode was found to be due to the heating of the sample caused by the laser irradiation, in agreement with experimental results obtained for uniformly heated samples. These findings are in quantitative agreement with results obtained by numerical calculations of the local temperature rise, which indicates the highly non-uniform temperature distribution in the laser excitation spot associated with the small thermal conductivity of solid C-60. (C) 1998 Elsevier Science B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Chemical Physics Letters	en
dc.identifier.doi	10.1016/S0009-2614(98)00495-3	en
dc.identifier.isi	ISI:000074466600020	en
dc.identifier.volume	290	en
dc.identifier.issue	1-3	en
dc.identifier.spage	125	en
dc.identifier.epage	130	en