Re-induced Raman active modes in HgBa2Can-1CunO2n+2+δ compounds

Poulakis, N; Lampakis, D; Liarokapis, E; Yoshikawa, A; Shimoyama, J-I; Kishio, K; Peacock, GB; Hodges, JP; Gameson, I; Edwards, PP; Panagopoulos, C

dc.contributor.author	Poulakis, N	en
dc.contributor.author	Lampakis, D	en
dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Yoshikawa, A	en
dc.contributor.author	Shimoyama, J-I	en
dc.contributor.author	Kishio, K	en
dc.contributor.author	Peacock, GB	en
dc.contributor.author	Hodges, JP	en
dc.contributor.author	Gameson, I	en
dc.contributor.author	Edwards, PP	en
dc.contributor.author	Panagopoulos, C	en
dc.date.accessioned	2014-03-01T01:15:07Z
dc.date.available	2014-03-01T01:15:07Z
dc.date.issued	1999	en
dc.identifier.issn	0163-1829	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13353
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	MERCURY-BASED SUPERCONDUCTOR	en
dc.subject.other	NEUTRON POWDER DIFFRACTION	en
dc.subject.other	HG-BASED SUPERCONDUCTORS	en
dc.subject.other	T-C	en
dc.subject.other	CRYSTAL-STRUCTURE	en
dc.subject.other	THERMAL-STABILITY	en
dc.subject.other	HGBA2CUO4+DELTA	en
dc.subject.other	HGBA2CA2CU3O8+DELTA	en
dc.subject.other	SPECTRA	en
dc.subject.other	OXYGEN	en
dc.title	Re-induced Raman active modes in HgBa2Can-1CunO2n+2+δ compounds	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevB.60.3244	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevB.60.3244	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	A comparative Raman study of Re-free and Re-doped HgBa2Can-1CunO2n+2+δ with n=1,3,4,5 is presented in an attempt to further clarify the structural and phononic modifications brought about by Re substitution. A number of extra high-frequency phonon peaks show up in the spectra of the Re-doped samples and are attributed to the oxygen modes of a strongly bound, almost decoupled ReO6 octahedron. As regards the apex oxygen in the Hg site, a clear transfer of spectral weight from the 590 to the 570 cm-1 apex phonon band is observed upon Re substitution. Such a change may well be accounted for assuming increased excess oxygen content for the Re-doped samples. Another interesting result is the enhancement upon Re doping of a narrow peak probably attributed to c-axis vibrations of Ba whose frequency shows a distinctive change with the number n of the CuO2 layers, providing an easy way to identify the various phases in a sample. ©1999 The American Physical Society.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review B - Condensed Matter and Materials Physics	en
dc.identifier.doi	10.1103/PhysRevB.60.3244	en
dc.identifier.isi	ISI:000081986300055	en
dc.identifier.volume	60	en
dc.identifier.issue	5	en
dc.identifier.spage	3244	en
dc.identifier.epage	3251	en