HTSC Josephson oscillator with inhomogeneous bias

IF 5.3 1区 数学 Q1 MATHEMATICS, INTERDISCIPLINARY APPLICATIONS
L.S. Revin, A.L. Pankratov, A.E. Parafin, D.V. Masterov, S.A. Pavlov, A.V. Blagodatkin
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引用次数: 0

Abstract

Properties of long Josephson junctions, fabricated from YBCO high-temperature superconducting thin films, are investigated experimentally and by numerical modeling. Since the junctions are placed into broadband log-periodic antennas, it poses limitations on junction’s bias feed properties, affecting their dynamics. It is shown that biasing junction at the output end, connected to the antenna, makes current–voltage characteristics more steep in comparison with biasing along the whole length and at the input end. The radiation properties of Josephson junctions are studied by receiving signals using dipole antenna array with cold electron bolometers. Broadband frequency tuning of the oscillator with radiation up to 800 GHz, being restricted by the receiver antenna range, is demonstrated. It is shown that for the considered junction lengths and bias feed types, the maximal radiation power varies weakly, leading to a high bolometric response.
非均匀偏置HTSC约瑟夫森振荡器
通过实验和数值模拟研究了YBCO高温超导薄膜制备的长Josephson结的性能。由于结被放置在宽带对数周期天线中,它限制了结的偏置馈电特性,影响了它们的动力学。结果表明,与全长度偏置和输入端偏置相比,与天线相连的输出端偏置结使电流-电压特性更加陡峭。利用冷电子测热计偶极子天线阵列接收信号,研究了Josephson结的辐射特性。在受接收机天线范围限制的情况下,对辐射高达800 GHz的振荡器进行宽带频率调谐。结果表明,对于所考虑的结长度和偏压馈电类型,最大辐射功率变化微弱,导致高辐射响应。
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来源期刊
Chaos Solitons & Fractals
Chaos Solitons & Fractals 物理-数学跨学科应用
CiteScore
13.20
自引率
10.30%
发文量
1087
审稿时长
9 months
期刊介绍: Chaos, Solitons & Fractals strives to establish itself as a premier journal in the interdisciplinary realm of Nonlinear Science, Non-equilibrium, and Complex Phenomena. It welcomes submissions covering a broad spectrum of topics within this field, including dynamics, non-equilibrium processes in physics, chemistry, and geophysics, complex matter and networks, mathematical models, computational biology, applications to quantum and mesoscopic phenomena, fluctuations and random processes, self-organization, and social phenomena.
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