在环形的基塔耶夫链中,奇偶平衡依赖运输
Wei Wang1, Zhen-Gang Zhu1, Gang Su2
1School of Electronic, Electrical and Communication Engineering, University of the Chinese Academy of Sciences, YuquanLu 19A, ShiJingShan district, Beijing, Beijing, 100049, China.
概括
基塔耶夫链中的电子运输取决于磁流和格子平价. 不对称的连接揭示了新的传输峰值,而混乱则强大地保留了这些依赖于平价的效应,为量子设备提供了洞察力.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子运输现象 量子运输现象
背景情况:
- 基塔耶夫链是拓超导体,表现出马约拉纳零模式.
- 电子运输受到磁流和晶格特性的影响.
研究的目的:
- 调查磁流和晶格点平价对环状基塔耶夫链中电子运输的影响.
- 分析直接传输 (DT),局部安德列夫反射 (LAR) 和交叉安德列夫反射 (CAR) 的作用.
- 在不同的电极连接配置下检查运输行为 (对称与不对称).
主要方法:
- 使用能量带视角对电子传输的理论分析.
- 运输机制的模拟,包括DT,LAR和CAR.
- 系统地研究对运输属性的弱扰动效应.
- 通过空间化学潜能调制对拓域壁进行研究.
主要成果:
- 不对称的连接会导致偶数格子点 (N) 的新兴LAR和CAR峰值.
- 在不对称的连接中,DT峰值的对称性被打破,峰值强度在 Φ = Nπ/3 降低.
- 对于不对称的连接,LAR和CAR峰值出现在F = Nπ/3处,超过了DT峰值.
- 能量波段具有周期性,磁流量 (Φ) 取决于格子平价 (偶数N的Nπ,奇数N的2Nπ).
- 取决于平价的运输效应对弱无序有很强的抵抗力.
- 拓域壁表现出独立于格子平价的传输特征,与统一的化学潜力制度形成对比.
结论:
- 基塔耶夫链中的电子运输对磁流和格子平价非常敏感.
- 电极连接配置显著改变了运输特性.
- 取决于平价的运输现象对混乱有很强的抵抗力,并且可以使用拓域壁进行工程设计.
- 这些发现为设计基于基塔耶夫链的量子设备提供了宝贵的见解.
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