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arXiv 2501.00749cond-mat.mes-hall
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边界类马约拉纳零模的编织规则

Braiding rule of boundary Majorana-like zero mode

Qiyun Ma, Hailong He, Meng Xiao, Zhengyou Liu

AI总结:

本文揭示了涡旋织构Kekulé调制石墨烯边界附近可调谐的类马约拉纳零模的编织规则,证明其受一维边界态Zak相保护,并提出了声学晶体实现方案,为拓扑态编织提供新自由度。

摘要:

拓扑态的研究已成为固态系统以及光子晶体、声子晶体等人工结构中的重要课题。其中,表现出非平庸编织过程的马约拉纳零模引起了广泛的研究兴趣。经典波中马约拉纳零模的类比物,即类马约拉纳零模(MLZMs),近来也受到了大量关注。然而,以往绝大多数工作所关注的MLZMs都被束缚在体内部的涡旋上。在本工作中,我们揭示了可在涡旋织构Kekulé调制石墨烯边界附近调谐的MLZMs的编织规则。我们证明,这些零维边界MLZMs的存在受到一维边界态Zak相的保护。因此,我们能够构造多个MLZMs并分析相应的编织过程。此外,我们还提供了在声学晶体中实现边界MLZMs的方案。本文所提出的边界MLZMs的可调谐性为固态系统和人工结构中的拓扑态编织提供了新的自由度。

英文摘要:

The study of topological states has become an important topic in both solid-state systems and artificial structures such as photonic crystals and phononic crystals. Among them, Majorana zero modes, which exhibit nontrivial braiding process, have attracted extensive research interest. The analog of Majorana zero modes in classical waves, or the Majorana-like zero modes (MLZMs), have also got a lot of attention recently. However, the vast majority of previous works concerned with MLZMs that were bounded to vortexes inside the bulk. Here in this work, we unveil the braiding rule of MLZMs that are tunable around the boundary of a vortex-texture Kekule modulated graphene. We show that the existence of these zero-dimensional boundary MLZMs is protected by the Zak phase of 1D boundary states. As such, we are able to construct multiple MLZMs and analyze the corresponding braiding process. In addition, we also provide an implementation scheme of the boundary MLZMs in acoustic crystals. The tunability of the boundary MLZMs proposed herein offer new freedom for topological states braiding in both solid-state systems and artificial structures.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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