Atomic image of a CuO2 plane in the STM image of a Bi2Sr2CaCu2O8+δ cleaved surface

S. Sugita, T. Watanabe, A. Matsuda

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Abstract

Clear atomic images of a Bi2Sr2CaCu2O8+δ (BSCCO) cleaved surface were obtained at room temperature by scanning tunneling microscopy (STM). The features of some observed images vary between two extreme cases, that is, the Bi-O plane image and the CuO2 plane image. And we have succeeded in obtaining a clear STM image of a CuO2 plane. From the CuO2 plane image, we found that this plane had two superstructures, one along the a axis and the other along the b axis. The periodicity of the superstructure along the b axis is (4-5)b, the same as that in the Bi-O plane, and the periodicity along the a axis is 2a. To explain these superstructures, we propose a lattice distortion model for the CuO2 plane of BSCCO.

Original languageEnglish
Pages (from-to)8715-8718
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number13
DOIs
Publication statusPublished - 2000 Oct 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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