Spatially Resolved Electronic Structure of Bi<sub>2</sub>Sr<sub>2-x</sub>La<sub>x</sub>CuO<sub>6+δ </sub>in the Two-dimensional Limit

ORAL

Abstract

Dimensionality plays a fundamental role in high-temperature superconductivity; all high-temperature superconductors adopt a layered crystal structure, and much of high-temperature superconductor theory is based on purely two-dimensional (2D) models. Here we exfoliate Bi2Sr2-xLaxCuO6+δ (referred to as La-Bi2201) single crystals down to monolayers (half unit cell) at liquid nitrogen temperature under ultra-high vacuum. A monolayer La-Bi2201 contains only a single layer of CuO2 plane, and therefore represents a cuprate superconductor in the ultimate 2D limit. We study the electronic structure of monolayer La-Bi2201 at atomic scale using scanning tunnelling microscopy and spectroscopy.

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Presenters

  • Hengsheng Luo

    • Physics Department, Fudan University

Authors

  • Hengsheng Luo

    • Physics Department, Fudan University

  • Liguo Ma

    • Fudan University
    • Physics Department, Fudan University

  • Peng Cai

    • Physics Department, Fudan University
    • Fudan University

  • Dongjoon Song

    • National Institute of Advanced Industrial Science and Technology

  • Ruidan Zhong

    • Brookhaven National Lab
    • Department of Chemistry, Princeton University
    • Department of Condensed Matter Physics and Materials Science, Brookhaven, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
    • Brookhaven National Laboratory
    • Condensed Matter Physics & Materials Science, Brookhaven National Laboratory
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • Brookhaven National Laboratories

  • Jian Shen

    • Fudan University
    • Physics Department, Fudan University

  • Genda Gu

    • Brookhaven National Laboratory
    • Brookhaven National Lab
    • Department of Condensed Matter Physics and Materials Science, Brookhaven, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
    • Cond. Matt. Physics and Material Science, Brookhaven Natl Lab
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory
    • Brookhaven National Labs, Long Island, NY, USA, 11973
    • Condensed Matter Physics & Materials Science, Brookhaven National Laboratory
    • Condensed Matter Physics, Brookhaven National Laboratory
    • Brookhaven National Laboratories
    • Chinese Academy of Sciences
    • Condensed Matter Physics & Materials Science, Brookhaven National Lab
    • Brookhaven Natl Lab

  • Hiroshi Eisaki

    • National Institute of Advanced Industrial Science and Technology
    • AIST
    • National Inst. Adv. Industrial Science & Technology, Tsukuba
    • National Institute of Advanced Industrial Science and Technology)
    • Electronics and Photonics Research Institute National Institute of Advanced Industrial Science and Technology, Japan

  • Xianhui Chen

    • University of Science and Technology of China
    • Department of physics, University of Science and Technology of China

  • Yuanbo Zhang

    • Fudan University
    • State Key Laboratory of Surface Physics and Department of Physics, Fudan University
    • Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, China
    • Dept. of Physics, Fudan University
    • Physics Department, Fudan University