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Abrupt onset of a second energy gap at the superconducting transition of underdoped Bi2212

Author

Listed:
  • W. S. Lee

    (Applied Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA)

  • I. M. Vishik

    (Applied Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA)

  • K. Tanaka

    (Applied Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA
    Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, California 94720, USA)

  • D. H. Lu

    (Applied Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA)

  • T. Sasagawa

    (Applied Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA)

  • N. Nagaosa

    (University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan)

  • T. P. Devereaux

    (University of Waterloo)

  • Z. Hussain

    (Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, California 94720, USA)

  • Z.-X. Shen

    (Applied Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA)

Abstract

In underdoped high-TC superconducting copper oxides a pseudogap develops well above TC. Whether the pseudogap is a distinct phenomenon or the incoherent continuation of the superconducting gap above TC is one of the central questions in high- TC research. A direct and unambiguous observation of a single-particle gap tied to the superconducting transition as function of temperature is discovered in underdoped Bi2Sr2CaCu2O8+δ.

Suggested Citation

  • W. S. Lee & I. M. Vishik & K. Tanaka & D. H. Lu & T. Sasagawa & N. Nagaosa & T. P. Devereaux & Z. Hussain & Z.-X. Shen, 2007. "Abrupt onset of a second energy gap at the superconducting transition of underdoped Bi2212," Nature, Nature, vol. 450(7166), pages 81-84, November.
    • Handle: RePEc:nat:nature:v:450:y:2007:i:7166:d:10.1038_nature06219
    DOI: 10.1038/nature06219
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    Cited by:

    1. A. Singh & H. Y. Huang & J. D. Xie & J. Okamoto & C. T. Chen & T. Watanabe & A. Fujimori & M. Imada & D. J. Huang, 2022. "Unconventional exciton evolution from the pseudogap to superconducting phases in cuprates," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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