Polarization-dependent infrared phonon spectra of quasi-one-dimensional Sr2CuO3 and SrCuO2

Y. S. Lee, T. W. Noh, H. S. Choi, E. J. Choi, H. Eisaki, S. Uchida

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We measured polarization-dependent infrared-active phonon spectra of Sr2CuO3 and SrCuO2 single crystals, which have one-dimensional Cu-O single and double chains, respectively. For each sample, the far-IR conductivity spectra show three phonon peaks for a given direction, in agreement with a group theory analysis. Interestingly, in both materials, we observed splitting of the stretching mode in the Cu-O chain direction. This splitting is more clearly observed in Sr2CuO3 than in SrCuO2. These observed behaviors are discussed in terms of intriguing features of the one-dimensional Cu-O chains.

Original languageEnglish
Pages (from-to)5285-5288
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number9
StatePublished - 1 Sep 2000


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