论文标题
过渡金属二甲基元化的乌贼模式破坏由于边缘状态的非副代谢性散布而导致的
SQUID pattern disruption in transition metal dichalcogenide Josephson junctions due to non-parabolic dispersion of the edge states
论文作者
论文摘要
从理论上讲，我们以过渡金属二甲基元素锯齿形丝带作为弱环节研究约瑟夫森连接。我们证明，边缘模式携带的超电流的空间轮廓决定了临界电流对垂直磁场的依赖性。我们探讨了这一发现，并分析了Zeeman相互作用的影响以及磁场对Andreev结合状态能量的影响。我们表明，在磁场的存在下，自旋 - 宽边缘模式的不相等的费米速度会导致安德里弗夫结合状态的异常移动。当功能区的两个相反的边缘进行并可以利用以揭示单个Josephson交界设备中Andreev Bound状态的异常相移时，这表明了鱿鱼临界电流振荡的明显修饰。
We theoretically study Josephson junctions with a transition metal dichalcogenide zigzag ribbon as a weak link. We demonstrate that the spatial profile of the supercurrent carried by the edge modes determines the critical current dependence on the perpendicular magnetic field. We explore this finding and analyze the impact of Zeeman interaction and the orbital effects of the magnetic field on the Andreev bound states energies. We show that the unequal Fermi velocities of the spin-opposite edge modes lead to an anomalous shift of the Andreev bound states in the presence of the magnetic field. This is manifested in a pronounced modification of the SQUID critical current oscillations when two opposite edges of the ribbon are conducting and can be exploited in order to reveal the anomalous phase shift of the Andreev bound states in a single Josephson junction device.
