GAP OBSERVATION BY TUNNELING MEASUREMENT ON SUPERCONDUCTING BA1-XKXBIO3 THIN-FILM - A FINITE-ENERGY GAP IN BA1-XKXBIO3

被引：69

作者：

SATO, H

TAKAGI, H

UCHIDA, S

机构：

[1] Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo

来源：

PHYSICA C | 1990年 / 169卷 / 5-6期

关键词：

Barium Compounds--Thin Films - Ceramic Materials - Electrons--Tunneling;

D O I：

10.1016/0921-4534(90)90582-Y

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Tunneling measurements were performed on highly oriented sputtered thin films of Ba0.6K0.4BiO3 with Tc=23 K. The observed conductance spectrum clearly indicated a finite superconducting energy gap in this sytem, contrary to the previous report on polycrystalline samples. From the fit to the BCS theory, 2Δ(0)/kBTc=3.7±0.5 was obtained. © 1990.

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页码：391 / 395

页数：5

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