Journal article
Crystal-field-excitation–phonon coupling in Pb2Sr2NdCu3O8+δ
Abstract
We have observed a double-peak structure around 300 cm-1 in the Raman spectrum of Pb2Sr2NdCu3O8+δ single crystals. Polarization-dependent measurements show clearly the B1g symmetry character of both peaks. Their dependence on temperature, isotopic substitution, and polarization can be interpreted by postulating a coupling between a crystal-field (CF) excitation of the Nd3+ 4f electrons and the B1g phonon mode. We have fitted the spectra …
Authors
Wegerer R; Thomsen C; Ruf T; Schönherr E; Cardona M; Reedyk M; Xue JS; Greedan JE; Furrer A
Journal
Physical Review B, Vol. 48, No. 9, pp. 6413–6419
Publisher
American Physical Society (APS)
Publication Date
September 1, 1993
DOI
10.1103/physrevb.48.6413
ISSN
2469-9950