Atomically-resolved charge modulation of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub><i> </i>using cross-sectional scanning tunneling microscopy

POSTER

Abstract

Short-range charge density wave (CDW) order is found universally among underdoped high-Tc superconductors. However, a picture on how CDW order propagates through CuO2 planes remains ambiguous. In this work, we presented cross-sectional scanning tunneling microscopy and spectroscopy measurement on YBa2Cu3O6.81 thin film and probed both atomic and electronic structure simultaneously along the c-axis. Our real-space observation reveals the existence of the charge modulation on CuO2 plane and CuO chain layers. The periodicity of charge modulation exhibits a wide distribution with peak value λ ≈ 1.3 nm and is correlated across layers, implying a close connection of CuO2 plane and CuO chain layer.

*This work was supported by Ministry of Science and Technology of Taiwan, ROC under contrasts MOST 106-2628-M-002-011-MY3.

Presenters

  • Chun-Chih Hsu

    • Department of Physics, National Taiwan University, Taipei, Taiwan

Authors

  • Chun-Chih Hsu

    • Department of Physics, National Taiwan University, Taipei, Taiwan

  • Bo-Chao Huang

    • Institute of Atomic and Molecular Science, Academia Sinica, Taipei, Taiwan

  • Chia-Seng Chang

    • Institute of Physics, Academia Sinica, Taipei, Taiwan
    • Institute of Physics, Academia Sinica

  • Ya-Ping Chiu

    • Department of Physics, National Taiwan University, Taipei, Taiwan; and Institute of Physics, Academia Sinica, Taipei, Taiwan