论文标题
边缘状态与haldane丝带上Falicov-kimball模型中的电荷密度波顺序之间的相互作用
Interplay between edge states and charge density wave order in the Falicov-Kimball model on a Haldane ribbon
论文作者
论文摘要
为了确定包括边缘状态对无旋转Falicov-kimball模型（FKM）相图对Haldane晶格的相图的影响，进行了对具有锯齿形边缘的相应色带几何形状的研究。通过改变色带的宽度，建立了与边缘的存在与边缘态在边缘状态之间干扰的效果之间的区别。证明由前者引起的局部掺杂会引起具有金属边缘状态的拓扑散装散装绝缘子。另外，它产生了一个相图的各个部分的子带的混合特征，引起了电荷密度波（CDW）相。还解决了CDW不稳定性上的本地掺杂。发现了两个其他无间隙相，该相是由边缘引起的，但稳定性区域取决于色带的宽度。
To determine the impact of including edge states on the phase diagram of a spinless Falicov-Kimball model (FKM) on the Haldane lattice, a study of a corresponding ribbon geometry with zigzag edges is conducted. By varying the ribbon widths, the distinction between the effects connected to the mere presence of the edges and those originating from interference between the edge states is established. The local doping caused by the former is shown to give rise to a topologically trivial bulk insulator with metallic edge states. Additionally, it gives rise to a charge density wave (CDW) phase with mixed character of the subbands in various parts of the phase diagram. The local doping on the CDW instability is also addressed. Two additional gapless phases are found, caused by the edges but with stability regions depending on the width of the ribbon.
