论文标题
如何测量拓扑平面约瑟夫森连接的主要极化
How to measure the Majorana polarization of a topological planar Josephson junction
论文作者
论文摘要
我们分析了拓扑超导性，并研究了由零能量模式所表现出的光谱特性，该模式在嵌入Josephson型连接中的金属条中诱导。着眼于此类准颗粒的主要极化，我们使用自旋选择性Andreev反射方法提出了可行的经验检测手段。我们的研究表明，在增加金属宽度的宽度后，Majorana极化的横向梯度逐渐发展。在存在强静电杂质的情况下，我们还检查了主要的准粒子的空间曲线和极化。我们表明，根据其位置，这种缺陷可以导致Majoraana模式的实质性定位。
We analyze the topological superconductivity and investigate the spectroscopic properties manifested by the zero-energy modes, induced in a metallic strip embedded into a Josephson-type junction. Focusing on the Majorana polarization of such quasiparticles, we propose feasible means for its empirical detection, using the spin-selective Andreev reflection method. Our study reveals a gradual development of a transverse gradient of the Majorana polarization across the metallic strip upon increasing its width. We also inspect the spatial profile and polarization of the Majorana quasiparticles in the presence of a strong electrostatic impurity. We show that, depending on its position, such a defect can lead to a substantial localization of the Majorana mode.
