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Tunneling Measurements of Density of States in Superconducting YBa2Cu3Oy

Published online by Cambridge University Press:  28 February 2011

K.I Ida ,
K. Gotoh ,
H. Enomoto ,
Y. Takano ,
N. Mori  and
H. Ozaki
K.I Ida
Affiliation:
Department of Electrical Engineering, Waseda University, Ohkubo 3–4–1, Shinjuku-ku, Tokyo 160, Japan
K. Gotoh
Affiliation:
Department of Electrical Engineering, Waseda University, Ohkubo 3–4–1, Shinjuku-ku, Tokyo 160, Japan
H. Enomoto
Affiliation:
Department of Electrical Engineering, Waseda University, Ohkubo 3–4–1, Shinjuku-ku, Tokyo 160, Japan
Y. Takano
Affiliation:
Department of Physics, Nihon University, Kanda-Surugadai 1–8, Chiyoda-ku, Tokyo 101, Japan
N. Mori
Affiliation:
Department of Electrical Engineering, Oyama National College of Technology, Ohaza-Nakakuki 771, Oyama 323, Japan
H. Ozaki
Affiliation:
Department of Electrical Engineering, Waseda University, Ohkubo 3–4–1, Shinjuku-ku, Tokyo 160, Japan
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Abstract

Tunneling measurements were applied to investigate the density of states of the high Tc superconductor in the temperature range from 4.2 K to the transition temperature. Several structures were found in conductance curves in higher bias region than ever reported, and they vanished around Tc. Temperature dependence of the bias voltages at which these structures appeared showed the BCS-like behavior.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 765
Copyright
Copyright © Materials Research Society 1988

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References

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