Quasiparticles-mediated thermal diode effect in Weyl Josephson junctions

IF 2.8 2区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Pritam Chatterjee and Paramita Dutta
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引用次数: 0

Abstract

We theoretically show quasiparticles-driven thermal diode effect (TDE) in an inversion symmetry-broken Weyl superconductor (WSC)-Weyl semimetal (WSM)-WSC Josephson junction. A Zeeman field perpendicular to the WSM region of the thermally-biased Weyl Josephson junction (WJJ) induces an asymmetry between the forward and reverse thermal currents, which is responsible for the TDE. Most interestingly, we show that the sign and magnitude of the thermal diode rectification coefficient is highly tunable by the superconducting phase difference and external Zeeman field, and also strongly depends on the junction length. The tunability of the rectification, particularly, the sign changing behavior associated with higher rectification enhances the potential of our WJJ thermal diode to use as functional switching components in thermal devices.
韦尔-约瑟夫森结中准粒子介导的热二极管效应
我们从理论上展示了反转对称性被打破的韦尔超导体(WSC)-韦尔半金属(WSM)-WSC 约瑟夫森结中的准粒子驱动的热二极管效应(TDE)。垂直于热偏压韦尔-约瑟夫森结(WJJ)的 WSM 区域的泽曼场诱发了正向和反向热电流之间的不对称,这就是 TDE 的原因。最有趣的是,我们发现热二极管整流系数的符号和大小可通过超导相位差和外部泽曼场进行高度调谐,而且还与结的长度密切相关。整流的可调性,尤其是与较高整流相关的符号变化行为,增强了我们的 WJJ 热二极管用作热器件中功能开关元件的潜力。
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来源期刊
New Journal of Physics
New Journal of Physics 物理-物理:综合
CiteScore
6.20
自引率
3.00%
发文量
504
审稿时长
3.1 months
期刊介绍: New Journal of Physics publishes across the whole of physics, encompassing pure, applied, theoretical and experimental research, as well as interdisciplinary topics where physics forms the central theme. All content is permanently free to read and the journal is funded by an article publication charge.
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