Polaron imprints in the infrared spectra of Nd2CuO4−y
✍ Scribed by P. Calvani; M. Capizzi; S. Lupi; P. Maselli; A. Paolone; P. Roy; S-W. Cheong; W. Sadowski; E. Walker
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 353 KB
- Volume
- 91
- Category
- Article
- ISSN
- 0038-1098
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Far-infrared mfl~ivity spectra R(~) in polarization E.I\_ C and DC-conductivity ape have been studied in a semieonducting phase of La2CuO4+x single crystals with various oxygen contents. The spectrum of infrared-active optical phonons has been obtained for stoiehiometric La2CuO4. It has been shown t
Infrared spectra measurements revealed that the highest energy F\_~ mode ( ~ 530 cm -m ) assigned to the in-plane Cu-O stretching motion in the T' structure, becomes weak in its strength with Ce-doping up to x=0.2 in Nd2\_xCexCuO4 while its energy shifts dOwnwards. It is concluded that the depressio