HYSTERETIC JOSEPHSON-JUNCTION BEHAVIOR OF BA1-XKXBIO3 GRAIN-BOUNDARY JUNCTIONS USING SRTIO3 BICRYSTAL SUBSTRATES

被引：8
|
作者：
TAKAMI, T [1 ]
KURODA, K [1 ]
KATAOKA, M [1 ]
WADA, Y [1 ]
TERADA, K [1 ]
TANIMURA, J [1 ]
KOJIMA, K [1 ]
NUNOSHITA, M [1 ]
机构：
[1] MITSUBISHI ELECTR CORP, MAT & ELECTR DEVICES LAB, AMAGASAKI, HYOGO 661, JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1994年 / 33卷 / 7B期
关键词：
SUPERCONDUCTOR; GRAIN BOUNDARY; TUNNEL JUNCTION; SRTIO3; BA(1-X)K(X)BIO3;
D O I：
10.1143/JJAP.33.L1004
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have fabricated Ba1-xKxBiO3 artificial grain boundary junctions with low resistance on a SrTiO3 bicrystal substrate. These junctions show hysteretic junction behavior with a clear superconducting energy gap structure and Josephson current. The area resistance was low; it ranged from 5.2 x 10(-8) to 2.0 x 10(-5) OMEGA.CM2. The I(c)R(n) product of the 20-mum-wide junction was 3.5 mV at 4.2 K. The gap voltage increased as the heater temperature increased and reached about 8 mV. A weak magnetic field applied normal to the substrate induced a Fraunhofer-type pattern.
引用
收藏
页码：L1004 / L1006
页数：3
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