Microwave induced tunable subharmonic steps in superconductor-ferromagnet-superconductor Josephson junction

被引：2
|
作者：
Nashaat, M. [1 ,2 ]
Shukrinov, Yu M. [2 ,3 ]
Irie, A. [4 ]
Ellithi, A. Y. [1 ]
El Sherbini, Th M. [1 ]
机构：
[1] Cairo Univ, Dept Phys, Cairo 12613, Egypt
[2] JINR, BLTP, Dubna 141980, Moscow Region, Russia
[3] Dubna State Univ, Dubna 141982, Russia
[4] Utsunomiya Univ, Dept Elect & Elect Syst Engn, Utsunomiya, Tochigi, Japan
来源：
LOW TEMPERATURE PHYSICS | 2019年 / 45卷 / 12期
关键词：
Josephson junction; ferromagnetic resonance; Landau-Lifshitz Gilbert equation;
D O I：
10.1063/10.0000203
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigate the coupling between ferromagnet and superconducting phase dynamics in superconductor-ferromagnet-superconductor Josephson junction. The current-voltage characteristics of the junction demonstrate a pattern of subharmonic current steps which forms a devil's staircase structure. We show that a width of the steps becomes maximal at ferromagnetic resonance. Moreover, we demonstrate that the structure of the steps and their widths can be tuned by changing the frequency of the external magnetic field, ratio of Josephson to magnetic energy, Gilbert damping and the junction size.
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页码：1246 / 1251
页数：6
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