Local lattice distortion in high-Tc cuprates.
The dynamical local lattice distortion in the CuO2 plane of the cuprate high-temperature superconductors is investigated with the numerical diagonalization study for finite clusters of t-J model. It is found that the in-plane vibrations of the oxygens play an important role in the formation of some static orders like CDW and SDW through the polaronic self localization effect. The 1/8 problem is also discussed based on the present result.
Sakai
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Faculty of Science, Himeji Institute of Technology, Ako, Hyogo, Japan. sakai@sci.himeji-tech.ac.jp