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Scanning Tunneling Spectroscopic Studies of the Pairing State of Cuprate Superconductors

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Abstract

Quasiparticle tunneling spectra of both hole-doped (p-type) and electron-doped (n-type) cuprates are studied using a low-temperature scanning tunneling microscope. The results reveal that neither the pairing symmetry nor the pseudogap phenomenon is universal among all cuprates, and that the response of n-type cuprates to quantum impurities is drastically different from that of the p-type cuprates. The only ubiquitous features among all cuprates appear to be the strong electronic correlation and the nearest-neighbor antiferromagnetic Cu2+-Cu2+ coupling in the CuO2 planes.

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Authors and Affiliations

  1. Department of Physics, California Institute of Technology, Pasadena, CA, 91125, USA

    N.-C. Yeh & C.-T. Chen

  2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA

    R. P. Vasquez

  3. Department of Physics, Pohang University of Science and Technology, Pohang, 790-784, Korea

    C. U. Jung

  4. Department of Physics, Pohang University of Science and Technology, Pohang, 790-784, Korea

    S.-I. Lee

  5. Superconductivity Research Laboratory, International Superconductivity Technology Center, Sinonome, Koto-ku, Tokyo, 135, Japan

    K. Yoshida & S. Tajima

Authors
  1. N.-C. Yeh
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  2. C.-T. Chen
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  3. R. P. Vasquez
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  4. C. U. Jung
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  5. S.-I. Lee
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  6. K. Yoshida
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  7. S. Tajima
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Yeh, NC., Chen, CT., Vasquez, R.P. et al. Scanning Tunneling Spectroscopic Studies of the Pairing State of Cuprate Superconductors. Journal of Low Temperature Physics 131, 435–444 (2003). https://doi.org/10.1023/A:1022934832360

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