Andreev spectroscopy of the triplet-superconductor state in the Bi/Ni bilayer system

Andreev spectroscopy of the triplet-superconductor state in the Bi/Ni bilayer system
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Bi/Ni双层系统中三线态超导态的Andreev光谱

DOI:
10.1103/physrevb.101.174514
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发表时间:
2020-05
期刊:
影响因子:
3.7
通讯作者:
Ke Xia
Ke Xia
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Xin Shang;Haiwen Liu;Ke Xia

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我们计算了铁磁铅和Bi/Ni双层膜系统之间的Andreev谱。双层系统由Anderson-Brinkman-Morel(ABM)态和ABM与$S $波的混合态描述。在ABM态和ABM态与小S波态的混合态中,Andreev电导与点接触实验[Zhao et al.,arXiv:1810.10403]。此外,零能量附近的电导峰是由ABM态的表面态引起的。我们的工作可能为理解最近的实验提供有益的澄清。
We calculate the Andreev spectroscopy between a ferromagnetic lead and a Bi/Ni bilayer system. The bilayer system is described by the Anderson-Brinkman-Morel (ABM) state and mixing ABM and $S$-wave states. In both the ABM state and ABM state is mixed with small $S$-wave state, the Andreev conductance is consistent with that obtained in the point-contact experiment [Zhao et al., arXiv:1810.10403]. Moreover, the conductance peak near zero energy is induced by the surface state of the ABM state. Our work may provide helpful clarification for understanding recent experiments.
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