✦ LIBER ✦

Superconducting gap observed by the atomic-site tunneling spectroscopy on YBCO and BSCCO

✍ Scribed by K. Kitazawa; M. Nantoh; S. Heike; A. Takagi; H. Ikuta; T. Hasegawa

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 323 KB
Volume: 209
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(93)90861-j

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✦ Synopsis

Atomic site tunneling spectroscopy has been applied to bulk single crystal of BSCCO and laser-ablated thin film of YBCO. The tunneling spectrtun on the cleaved surface of BSCCO showed both semiconducting and superconducting behaviors, depending on the tip-sample distance. This observation is consistent with the quasi two-dimensional layered model. In both systems, clear superconducting gap structures with quite low zero bias conductances were observed, suggesting the s-wave like symmetry of the order parameter.

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