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A ‘checkerboard’ electronic crystal state in lightly hole-doped Ca2-xNaxCuO2Cl2

Author

Listed:
  • T. Hanaguri

    (RIKEN (Institute of Physical and Chemical Research)
    Japan Science and Technology Agency)

  • C. Lupien

    (Cornell University)

  • Y. Kohsaka

    (University of Tokyo)

  • D.-H. Lee

    (University of California
    Lawrence Berkeley National Laboratory)

  • M. Azuma

    (Japan Science and Technology Agency
    Kyoto University)

  • M. Takano

    (Kyoto University)

  • H. Takagi

    (RIKEN (Institute of Physical and Chemical Research)
    Japan Science and Technology Agency
    University of Tokyo)

  • J. C. Davis

    (Cornell University)

Abstract

The phase diagram of hole-doped copper oxides shows four different electronic phases existing at zero temperature. Familiar among these are the Mott insulator, high-transition-temperature superconductor and metallic phases. A fourth phase, of unknown identity, occurs at light doping along the zero-temperature bound of the ‘pseudogap’ regime1. This regime is rich in peculiar electronic phenomena1, prompting numerous proposals that it contains some form of hidden electronic order. Here we present low-temperature electronic structure imaging studies of a lightly hole-doped copper oxide: Ca2-xNaxCuO2Cl2. Tunnelling spectroscopy (at energies |E| > 100 meV) reveals electron extraction probabilities greatly exceeding those for injection, as anticipated for a doped Mott insulator. However, for |E|

Suggested Citation

  • T. Hanaguri & C. Lupien & Y. Kohsaka & D.-H. Lee & M. Azuma & M. Takano & H. Takagi & J. C. Davis, 2004. "A ‘checkerboard’ electronic crystal state in lightly hole-doped Ca2-xNaxCuO2Cl2," Nature, Nature, vol. 430(7003), pages 1001-1005, August.
    • Handle: RePEc:nat:nature:v:430:y:2004:i:7003:d:10.1038_nature02861
    DOI: 10.1038/nature02861
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    Cited by:

    1. Can-Li Song & Elizabeth J. Main & Forrest Simmons & Shuo Liu & Benjamin Phillabaum & Karin A. Dahmen & Eric W. Hudson & Jennifer E. Hoffman & Erica W. Carlson, 2023. "Critical nematic correlations throughout the superconducting doping range in Bi2−zPbzSr2−yLayCuO6+x," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Ziyuan Chen & Dong Li & Zouyouwei Lu & Yue Liu & Jiakang Zhang & Yuanji Li & Ruotong Yin & Mingzhe Li & Tong Zhang & Xiaoli Dong & Ya-Jun Yan & Dong-Lai Feng, 2023. "Charge order driven by multiple-Q spin fluctuations in heavily electron-doped iron selenide superconductors," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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