Structure and phonon anomaly in La1.85Sr0.15CuO4

Toshio Arakawa, Masatoshi Arai, Tatsuo Nishijima, Masaki Fujita, Yoichi Murakami, Hajime Kawada, Kazuyoshi Yamada, Chul Ho Lee, Yasuo Endoh

Research output: Contribution to journalArticlepeer-review


We performed X-ray diffraction and neutron scattering on a single crystal Lal.85Sr0.15CuO4. We found that the lattice anomaly is caused by the optical tilt phonon associated with the expansion of the c-lattice constartt below Tc. We also found that the (100) peak starts to develop below the HTT-LTO structural phase transition temperature. These results suggest that there is a strong relation between the superconductivity and the structural instability.

Original languageEnglish
Pages (from-to)1239-1240
Number of pages2
JournalCzechoslovak Journal of Physics
Issue numberSUPPL. 3
Publication statusPublished - 1996


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