Scanning Tunneling Microscopy Study on Infinite-layer SrCuO2 Films

ORAL

Abstract

We report on the growth of infinite-layer SrCuO2 films on SrTiO3 (001) substrate by molecular beam epitaxy. In situ scanning tunneling microscopy reveals a 2 × 2 reconstruction induced by oxygen vacancies, in consistent with the first-principles calculations that the terminated layer is CuO1.5. Depending on the film thickness and growth temperature, a striped structure is further observed on the surface of SrCuO2 films. Our results may pave a new way to directly study the superconducting layer in cuprates at the atomic scale.

–

Presenters

  • Yong Zhong

    State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Univ.

Authors

  • Yong Zhong

    State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Univ.

  • Sha Han

    State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Univ.

  • Yang Wang

    State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Univ.

  • Zhi-Ling Luo

    State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Univ.

  • Can-Li Song

    State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Univ.

  • XUCUN MA

    Tsinghua Univ, Physics Department, Tsinghua University, Department of Physics, Tsinghua University, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Univ.

  • Qikun Xue

    Physics Department, Tsinghua University, Department of Physics, Tsinghua University, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Univ., Tsinghua University, State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University