A PLANAR GRADIOMETER BASED ON A MICROWAVE RF-SQUID

被引：2

作者：

MUCK, M

DIEHL, D

HEIDEN, C

机构：

[1] Institute of Thin Film and Ion Technology, Research Centre Jülich GmbH, 5170 Jülich

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 02期

关键词：

D O I：

10.1109/20.133837

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new type of gradiometer is described, working on the basis of a planar microwave rf-SQUID. In this type of rf-SQUID, a superconducting half-wavelength stripline resonator serves as tank circuit, into which the SQUID is integrated. If a gradiometer configuration is used for the SQUID (i.e. two loops), a certain asymmetry of the stripline resonator should be provided to ensure sufficient coupling between gradiometer and resonator. For first experiments, gradiometers were prepared from thin Niobium films on sapphire substrates, having either microbridges or tunnel junctions as Josephson elements. When operated in hysteretic mode, modulation voltages of about 100-mu-V were measured for both microbridge- and tunnel junction SQUIDs.

引用

页码：2983 / 2985

页数：3

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HEIDEN, C .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) :2983-2985

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