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MICROWAVE MICROSCOPY USING A SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE

被引：39
作者：
BLACK, RC
WELLSTOOD, FC
DANTSKER, E
MIKLICH, AH
NEMETH, DT
KOELLE, D
LUDWIG, F
CLARKE, J
机构：
[1] UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720
[2] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720
来源：
APPLIED PHYSICS LETTERS | 1995年 / 66卷 / 01期
关键词：
D O I：
10.1063/1.114159
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present results on a near-field scanning probe microwave microscope which is based on the nonlinear behavior of a YBa2Cu3O7 direct-current superconducting quantum interference device (SQUID). Our system has a spatial resolution of about 30 μm and derives its probing field from circulating currents in the SQUID loop. The frequency is set by the Josephson relation and is continuously tunable up to about 200 GHz. By imaging small patterned normal metal thin-film samples of Cu and Nb at 77 K, we have confirmed the operating bandwidth of the system and investigated the nature of the imaging process.© 1995 American Institute of Physics.
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页码：99 / 101
页数：3
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