The influence of the second harmonic in the current-phase relation on the voltage-current characteristic of high TC DC SQUID

被引:5
|
作者
Greenberg, YS
Novikov, IL
Schultze, V
Meyer, HG
机构
[1] Novosibrisk State Tech Univ, Novosibirsk 630092, Russia
[2] Inst Phys High Technol, D-07702 Jena, Germany
来源
EUROPEAN PHYSICAL JOURNAL B | 2005年 / 44卷 / 01期
关键词
D O I
10.1140/epjb/e2005-00099-1
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
A theory for the voltage-current characteristic in high T-C DC SQUIDs ( Superconducting Quantum Interference Devices), which accounts for a second harmonic in the junction current-phase relation, is developed. It is shown that the small inductance DC SQUIDs can be used for the investigation of the second harmonic via its influence on the voltage-flux curve. If the second harmonic is perceptible, then for large inductance DC SQUIDs the theory can explain the substantial deviations of the experimental voltage modulation from theoretical predictions and computer simulations based on conventional sinusoidal current-phase relation. The detail comparison with the experiment is performed.
引用
收藏
页码:57 / 62
页数:6
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