论文标题
外延石墨烯基拓扑绝缘子中拓扑相变的热力学探针
A thermodynamic probe of the topological phase transition in epitaxial graphene based Floquet topological insulator
论文作者
论文摘要
可以使用光调整某些材料，从微不足道到拓扑阶段。这些材料的主要例子，分类为浮雕拓扑绝缘子（FTI），是外延石墨烯。在本文中，我们通过量子奥托和量子stirling热发动机的效率和工作输出来探测FTI的拓扑相变。效率或工作输出的最大/最小值总是标志着相转换点。此外，在光的极化方向上，这两个发动机的工作输出和效率都明显稳健。
One can use light to tune certain materials, from a trivial to a topological phase. A prime example of such materials, classified as Floquet topological insulators (FTI), is epitaxial graphene. In this paper, we probe the topological phase transition of an FTI via the efficiency and work output of quantum Otto and quantum Stirling heat engines. A maximum/minimum in the efficiency or work output invariably signals the phase transition point. Further, both engines' work output and efficiency are markedly robust against the polarization direction of light.
