论文标题
应变诱导的假磁场和kagome晶体中的量子振荡
Strain-induced pseudomagnetic field and quantum oscillations in kagome crystals
论文作者
论文摘要
一个kagome晶格由安排在蜂窝晶格上的角共享三角形组成，使每个蜂窝键都有一个kagome位置，而每个kagome三角则封闭一个蜂窝状位点。这种紧密的关系意味着两个晶格具有共同的特征。我们在这里预测，类似于蜂窝晶格石墨烯的kagome晶体以独特的方式对弹性应变做出反应，即dirac点附近的块状电子状态通过应变诱导的伪磁场重组成平坦的landau水平，而未经良好的边缘状态在未成形的晶体中的能量差异中分离出来。当应变连续调节时，所得的扫描假磁场会导致状态密度（DOS）和电导率的量子振荡。
A kagome lattice is composed of corner-sharing triangles arranged on a honeycomb lattice such that each honeycomb bond hosts a kagome site while each kagome triangle encloses a honeycomb site. Such close relation implies that the two lattices share common features. We predict here that a kagome crystal, similar to the honeycomb lattice graphene, reacts to elastic strain in a unique way that the bulk electronic states in the vicinity of Dirac points are reorganized by the strain-induced pseudomagnetic field into flat Landau levels, while the degenerate edge states in the undeformed crystal become separated in the energy dimension. When the strain is tuned continuously, the resulting scanning pseudomagnetic field gives rise to quantum oscillations in both density of states (DOS) and electric conductivity.
