Institute for Theoretical Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
CMPMS Division, Brookhaven National Laboratory, Upton, New York 11973, USA.
Phys Rev Lett. 2019 Jan 18;122(2):027201. doi: 10.1103/PhysRevLett.122.027201.
We show that the coupling of homogeneous Heisenberg spin-1/2 ladders in different phases leads to the formation of interfacial zero energy Majorana bound states. Unlike Majorana bound states at the interfaces of topological quantum wires, these states are void of topological protection and generally susceptible to local perturbations of the host spin system. However, a key message of our Letter is that, in practice, they show a high degree of resilience over wide parameter ranges which may make them interesting candidates for applications.
我们表明，处于不同相的均匀海森堡自旋-1/2 梯链的耦合会导致形成界面零能马约拉纳束缚态。与拓扑量子线界面处的马约拉纳束缚态不同，这些态没有拓扑保护，通常容易受到宿主自旋系统的局部微扰。然而，我们这封信件的一个关键信息是，实际上，在宽参数范围内，它们表现出高度的弹性，这使得它们可能成为有应用前景的候选对象。
