Nontopological Majorana Zero Modes in Inhomogeneous Spin Ladders.
Nontopological Majorana Zero Modes in Inhomogeneous Spin Ladders.
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DOI：
10.1103/physrevlett.122.027201
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发表时间：
2018-06
影响因子：
8.6
通讯作者：
N. Robinson;A. Altland;R. Egger;N. M. Gergs;Wei Li;D. Schuricht;A. Tsvelik;A. Weichselbaum;R. Konik
中科院分区：
文献类型：
--
作者：
N. Robinson;A. Altland;R. Egger;N. M. Gergs;Wei Li;D. Schuricht;A. Tsvelik;A. Weichselbaum;R. Konik
结果表明，不同相的海森堡自旋1/2梯的耦合导致了界面零能Majorana束缚态的形成。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，并且通常容易受到宿主自旋系统的局部扰动。然而，我们的信的一个关键信息是，在实践中，它们在很宽的参数范围内表现出高度的弹性，这可能使它们成为有趣的应用候选者。
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.