JOSEPHSON OSCILLATIONS AND NOISE TEMPERATURES IN YBA2CU3O7-X GRAIN-BOUNDARY JUNCTIONS

被引：37

作者：

DIVIN, YY

MYGIND, J

PEDERSEN, NF

CHAUDHARI, P

机构：

[1] RUSSIAN ACAD SCI,INST RADIO ENGN & ELECTR,MOSCOW 103907,USSR

[2] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 25期

关键词：

D O I：

10.1063/1.108007

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The ac Josephson effect was studied in YBa2Cu3O7-x grain-boundary junctions (GBJ) in the temperature range from 4 to 90 K. The temperature dependence of the linewidth of millimeter-wave Josephson oscillations was measured and it is shown that the derived effective noise temperatures may be as low as the physical temperature in the temperature range investigated. In the millimeter-wave range, linewidths as low as 380 MHz were found at liquid-nitrogen temperatures.

引用

页码：3053 / 3055

页数：3

共 7 条

[1] ORIENTATION DEPENDENCE OF GRAIN-BOUNDARY CRITICAL CURRENTS IN YBA2CU3O7-DELTA BICRYSTALS [J].