混合 α-T3 晶格结中的安德列夫反射

IF 2.4 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Solid State Communications Pub Date : 2024-03-13 DOI:10.1016/j.ssc.2024.115489

Kai-Yi Lyu, Yu-Xian Li

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引用次数: 0

摘要

我们探索了基于 α-T3 晶格的正常金属（N）-超导体（S）-正常金属（N）混合结中的局部安德列夫反射和交叉安德列夫反射。最初，左右两个部分都具有骰子晶格结构（α=1）。我们计算了电子反射、局部安德烈耶夫反射、电子透射和交叉安德烈耶夫反射的概率，以及局部电导、电子透射电导和交叉安德烈耶夫反射电导。随后，我们分析了左侧为骰子晶格、右侧为石墨烯（α=0）以及反向配置的结构。我们的研究结果表明，交叉安德列夫反射在石墨烯-超导体-骰子晶格（GSD）结中更为普遍，尤其是在超导区长度适中、电子入射角较大和电子入射能量较低的情况下。

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Andreev reflection in hybrid α−T3 lattices junction

We explore local Andreev reflection and crossed Andreev reflection in a normal metal (N)–superconductor (S)–normal metal (N) hybrid junction based on the $α - T_{3}$ lattice. Initially, both the left and right sections feature dice lattice structures ( $α = 1$ ). We compute probabilities for electron reflection, local Andreev reflection, electron transmission, and crossed Andreev reflection, as well as local conductance, electron transmission conductance, and crossed Andreev reflection conductance. Subsequently, we analyze structures with the left side featuring dice lattice and the right side graphene ( $α = 0$ ), as well as the reverse configuration. Our findings reveal that crossed Andreev reflections are more prevalent in the graphene–superconductor–dice lattice (GSD) junction, particularly with moderate superconducting region lengths, larger electron incidence angles, and lower electron incidence energy.

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来源期刊

Solid State Communications 物理-物理：凝聚态物理

CiteScore

3.40

自引率

4.80%

发文量

287

审稿时长

51 days

期刊介绍： Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged. A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions. The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.