Scanning Tunneling Spectroscopic Studies of Cuprate Superconductors

Details Scanning Tunneling Spectroscopic Studies of Cuprate Superconductors Scanning Tunneling Spectroscopic Studies of Cuprate Superconductors

2002-07-24

arxiv.org/abs/cond-mat/0207594v1

J. Low Temp. Phys. 131, 435 (2003)

Physics

Condensed Matter

Superconductivity

10 pages, 3 figures. Submitted to Journal of Low Temperature Physics for MOS2002

Scientific paper

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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