论文标题
定期驱动的Weyl和多翼半仪器中的磁通型特征
Magneto-transport signatures in periodically-driven Weyl and multi-Weyl semimetals
论文作者
论文摘要
我们研究了时间周期性驾驶（例如，通过闪闪发光的圆形光线）对三维WEYL和多翼半金属，在平面大厅和平面热厅设置中的影响。我们通过在较大的频率限制中使用floquet形式主义来结合驱动器的效果。我们使用半经典的玻尔兹曼传输方程来评估纵向磁电导率，平面霍尔电导率，纵向热电动系数和横向热电动系数。我们在参数的某些限制下证明了这些传输系数的明确表达，可以在其中分析积分。我们通过将物理值与数值结果进行比较，直接从积分的数值集成获得，通过比较物理值进行了交叉检查我们的分析近似值。获得的答案表明，相应的半法的拓扑电荷在这些运输特性中具有深刻的特征，可以在实验中观察到。
We investigate the influence of a time-periodic driving (for example, by shining circularly polarized light) on three-dimensional Weyl and multi-Weyl semimetals, in the planar Hall and planar thermal Hall set-ups. We incorporate the effects of the drive by using the Floquet formalism in the large frequency limit. We evaluate the longitudinal magneto conductivity, planar Hall conductivity, longitudinal thermo-electric coefficient, and transverse thermo-electric coefficient, using the semi-classical Boltzmann transport equations. We demonstrate the explicit expressions of these transport coefficients in certain limits of the parameters, where it is possible to perform the integrals analytically. We cross-check our analytical approximations by comparing the physical values with the numerical results, obtained directly from the numerical integration of the integrals. The answers obtained show that the topological charges of the corresponding semimetals have profound signatures in these transport properties, which can be observed in experiments.
