POSSIBLE PHASE-LOCKING OF VERTICALLY STACKED JOSEPHSON FLUX-FLOW OSCILLATORS

被引：51
|
作者：
USTINOV, AV [1 ]
KOHLSTEDT, H [1 ]
HEIDEN, C [1 ]
机构：
[1] UNIV GIESSEN, INST ANGEW PHYS, D-35392 GIESSEN, GERMANY
来源：
APPLIED PHYSICS LETTERS | 1994年 / 65卷 / 11期
关键词：
D O I：
10.1063/1.112014
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A system of two vertically stacked Nb/Al-AlO(x)/Nb long Josephson junctions is studied experimentally. Tle magnetic coupling between the junctions is provided by their common electrode of the thickness d approximately lambda(L). The current-voltage characteristics of the stack displays resonant steps which are understood to be the phase-locked flux-flow resonances of the two junctions. These modes can be tuned by the magnetic field in a broad voltage range which corresponds to the Josephson frequencies between 150 and 600 GHz. Our observations suggest a possibility of application of the stacked long Josephson junctions as local oscillators for millimeter and submillimeter wave circuits.
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收藏
页码：1457 / 1459
页数：3
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