POLARON IMPRINTS IN THE INFRARED-SPECTRA OF ND2CUO4-Y

Authors
CALVANI P CAPIZZI M LUPI S MASELLI P PAOLONE A ROY P CHEONG SW SADOWSKI W WALKER E
Citation
P. Calvani et al., POLARON IMPRINTS IN THE INFRARED-SPECTRA OF ND2CUO4-Y, Solid state communications, 91(2), 1994, pp. 113-116
Citations number
31
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
91
Issue
2
Year of publication
1994
Pages
113 - 116
Database
ISI
SICI code
0038-1098(1994)91:2<113:PIITIO>2.0.ZU;2-A
Abstract
In addition to four E(u) phonons, Nd2CuO4-y single crystals show far-i nfrared reflectivity peaks which depend on temperature and y. They pro vide evidence for the insurgence of local modes induced by doping. The so called d- or J-band at approximately 1000 cm-1 can be partially re solved, and shown to be produced by combination bands of those local m odes. These results provide direct evidence for polaron formation in t his compound.