Resonance damping in tightly coupled d.c. SQUIDs via intra-coil resistors

被引：6

作者：

Huber, ME

Steinbach, AH

Ono, RH

机构：

[1] Univ Colorado, Dept Phys, Denver, CO 80217 USA

[2] Natl Inst Stand & Technol, Div Electromagnet Technol, Boulder, CO 80303 USA

[3] Univ Colorado, Dept Phys, Boulder, CO 80303 USA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2001年 / 351卷 / 02期

关键词：

SQUID; resonance; damping; planar coil; distortion; noise;

D O I：

10.1016/S0921-4534(00)01627-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Intra-coil damping is demonstrated to be an effective method for reducing resonance structure in well coupled d.c. SQUIDs with large input coils. A resistance of 1 Omega is placed across each turn of a 137 turn coil coupled to a planar washer d.c. SQUID. Non-ideal structure in the voltage-flux curve is greatly reduced, extending the range (in current bias) of satisfactory device operation. The resulting flux noise, while higher than the thermal noise limit, is less than that observed in undamped devices and can be predicted with a simple model. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：85 / 90

页数：6