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Scanning Tunneling Spectroscopic Studies of Cuprate Superconductors

N. -C. Yeh·C. -T. Chen·R. P. Vasquez·C. U. Jung·S. -I. Lee·K. Yoshida·S. Tajima
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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 Cu^{2+}-Cu^{2+} coupling in the CuO_2 planes.

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N. -C. Yeh, C. -T. Chen, R. P. Vasquez, C. U. Jung, S. -I. Lee, K. Yoshida, S. Tajima. 2002-07-24. Scanning Tunneling Spectroscopic Studies of Cuprate Superconductors. https://arxiv.org/abs/cond-mat/0207594

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