Tunneling Studies of Multilayered Superconducting Cuprate (Cu,C)Ba2Ca3Cu4O12+δ-Reference-Cited by-同舟云学术

Tunneling Studies of Multilayered Superconducting Cuprate (Cu,C)Ba2Ca3Cu4O12+δ

Published:2003-08-10 Issue:18n20 Volume:17 Page:3612-3616
ISSN:0217-9792
Container-title:International Journal of Modern Physics B
language:en
Short-container-title:Int. J. Mod. Phys. B

Author:

Miyakawa N.¹,Tokiwa K.²³,Mikusu S.²,Zasadzinski J. F.⁴⁵,Ozyuzer L.⁶,Ishihara T.⁷,Kaneko T.⁷,Watanabe T.²³,Gray K. E.⁴

Affiliation:

1. Department of Mechanics and Systems Design, Tokyo University of Science, Suwa, 5000-1 Toyohira, Chino, Nagano 391-0292, Japan

2. Department of Applied Electronics, Tokyo University of Science, Yamazaki, Noda, Chiba 278-8510, Japan

3. CREST of JST, Kawaguchi, Saitama 332-0012, Japan

4. Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA

5. Physics Division, Illinois Institute of Technology, Chicago, IL 60616, USA

6. Department of Physics, Izmir Institute of Technology, TR-35437 Izmir, Turkey

7. Department of Applied Physics, Tokyo University of Science, 1-3 Kagurazaka, Tokyo 162-8601, Japan

Abstract

Point contact tunneling data are reported in a multilayered high-T c cuprate (Cu,C)Ba 2 Ca 3 Cu 4 O 12+δ with T c = 117 K . The tunneling spectra in the superconducting state (T ≪ T c ) display spectral features such as well-defined superconducting gap peak at ±Δ as well as dip-hump structures beyond the peaks. In some cases, the spectra with two-gaps have been observed, indicating the coexistence of two inequivalent superconducting layers. The statistical distribution of superconducting gap magnitude suggests two distinct kinds of superconducting gaps that may originate from two inequivalent CuO 2 planes, a characteristics of multilayered cuprates with n ≥ 3.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217979203021496

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