Negative differential resistance in Josephson junctions coupled to a cavity

被引：5

作者：

Pedersen, N. F. ^{[1
]}

Filatrella, G. ^{[2
]}

Pierro, V. ^{[3
]}

Sorensen, M. P. ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Appl Math & Comp Sci, DK-2800 Lyngby, Denmark

[2] Univ Sannio, Dept Sci & Technol, Benevento, Italy

[3] Univ Sannio, Dept Engn, Benevento, Italy

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2014年 / 503卷

关键词：

Nonlinear oscillators; Superconducting devices; Millimeter wave devices; Nonlinear circuits; Nonlinear optics; THZ RADIATION; ARRAYS; SYNCHRONIZATION; EMISSION;

D O I：

10.1016/j.physc.2014.02.025

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Regions with negative differential resistance can arise in the IV curve of Josephson junctions and this phenomenon plays an essential role for applications, in particular for THz radiation emission. For the measurement of high frequency radiation from Josephson junctions, a cavity - either internal or external is often used. A cavity may also induce a negative differential resistance region at the lower side of the resonance frequency. We investigate the dynamics of Josephson junctions with a negative differential resistance in the quasi particle tunnel current, i.e. in the McCumber curve. We find that very complicated and unexpected interactions take place. This may be useful for the interpretation of experimental measurements of THz radiation from intrinsic Josephson junctions. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：178 / 182

页数：5

共 50 条

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