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

  • HITC—Transport, Thermodynamic Properties, Electron-Phonon Coupling
  • Published:
Czechoslovak Journal of Physics Aims and scope

Abstract

We performed X-ray diffraction and neutron scattering on a single crystal La1.85Sr0.15CuO4. We found that the lattice anomaly is caused by the optical tilt phonon associated with the expansion of the c-lattice constant 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.

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Authors and Affiliations

  1. Department of Physics, Kobe University, Rokkodai, Nada, 657, Kobe, Japan

    Toshio Arakawa, Masatoshi Arai, Tatsuo Nishijima & Masaki Fujita

  2. National Laboratory for High Energy Physics, Oho, Photon Factory, 305, Tsukuba, Japan

    Yoichi Murakami & Hajime Kawada

  3. Department of Physics, Tohoku University, Aramaki, Aoba, 980, Sendai, Japan

    Kazuyoshi Yamada, Chul-ho Lee & Yasuo Endoh

Authors
  1. Toshio Arakawa
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  2. Masatoshi Arai
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  3. Tatsuo Nishijima
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  4. Masaki Fujita
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  5. Yoichi Murakami
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  6. Hajime Kawada
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  7. Kazuyoshi Yamada
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  8. Chul-ho Lee
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  9. Yasuo Endoh
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Arakawa, T., Arai, M., Nishijima, T. et al. Structure and phonon anomaly in La1.85Sr0.15CuO4 . Czech J Phys 46 (Suppl 3), 1239–1240 (1996). https://doi.org/10.1007/BF02562734

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  • DOI: https://doi.org/10.1007/BF02562734

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