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OBSERVATION OF BOUNDARY JOSEPHSON-JUNCTION WITH D-WAVE PAIRING CHARACTERISTICS
被引：0
|作者：
ISHIMARU, Y
WEN, J
HAYASHI, K
ENOMOTO, Y
KOSHIZUKA, N
机构：
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS
|
1995年
/
34卷
/
11B期
关键词：
YBCO;
A-AXIS GRAIN;
TEM;
RSJ;
SHAPIRO STEP;
FRAUNHOFER PATTERN;
D-WAVE PAIRING STATE;
D O I：
暂无
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Josephson junctions have been fabricated along boundaries between (001) of a-axis oriented YBCO grains and (110) of c-axis oriented YBCO grains. These grain boundaries are formed along an a-axis oriented grain surrounding by the YBCO c-axis oriented film deposited on a MgO (001) substrate. TEM observation shows clear lattice image of the grain boundary. A typical RSJ type I-V curve with J(c) of 1.4 x 10(4) A/cm(2) at 4.2 K. and Shapiro steps under microwave irradiation are observed, indicating that the boundary works as a Josephson junction. The diffraction pattern of I-c under magnetic field has the minimum value at zero magnetic field. This property is analogous to one expected for a s-wave-d-wave junction.
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页码：1532 / 1535
页数：4
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