圆偏振光在六硼化钐表面诱导的量子反常霍尔效应
Quantum anomalous Hall effect induced by circularly polarized light on samarium hexaboride surface
AI总结：
基于周期性 Anderson 模型的 slave boson 协议链接版本，研究了 3D 六硼化钐的含时表面哈密顿量，发现圆偏振光垂直入射可在高频极限下诱导量子反常霍尔态，且左右旋光的 Chern 数均为 1。
摘要：
我们研究了基于先前报道的周期性 Anderson 模型的 slave boson 协议链接版本的 3D 化合物六硼化钐的含时表面哈密顿量。大在位电子-电子排斥问题被重新表述为涉及一个代表空间无关的 slave boson 凝聚态项的全纯约束。在本通讯中，我们展示了在 Floquet 理论框架内的高频极限下，由于圆偏振光垂直入射到该化合物表面，可能进入量子反常霍尔态。该项的值受到入射辐射强度的轻微影响。研究发现，对于右旋和左旋圆偏振光，Chern 数均为 1。
英文摘要：
We examine a time-dependent, surface Hamiltonian for the 3D compound samarium hexaboride based on the slave boson protocol linked version of the periodic Anderson model reported earlier. The problem of large on-site electron-electron repulsion was reformulated in terms of a holonomic constraint involving a term representing the spatially-independent Slave boson-condensate. In this communication, we show the possible access to the quantum anomalous Hall state due to the normal incidence of circularly polarized light on the surface of the compound in the high frequency limit within the framework of the Floquet theory. The value of the term is mildly affected by the intensity of incident radiation. The chern number is found to be unity for the right-handed as well as the left-handed circularly polarized light.
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