Macroscopic magnetization tunneling in the Josephson φ0 junction

被引：0
|
作者：
Kim, Gwang-Hee [1 ]
机构：
[1] Sejong Univ, Dept Phys & Astron, Seoul 05006, South Korea
来源：
AIP ADVANCES | 2019年 / 9卷 / 12期
基金：
新加坡国家研究基金会;
关键词：
QUANTUM DECAY; NANOPARTICLES;
D O I：
10.1063/1.5130138
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We consider quantum tunneling of the magnetic moment controlled by the bias current and the magnetic field along the general direction in the Josephson phi(0) junction. Different forms of the energy barriers can be generated by the magnitude and direction of the current and the magnetic field. Employing the instanton technique, we present the analytic formulas of the tunneling rate in the uniaxial and nonuniaxial symmetries, and discuss that the Josephson junction is ideally suited for the study of the magnetic tunneling. (C) 2019 Author(s).
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页数：4
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