论文标题
用于蜂窝折扣模型的磁性Fabry-Pérot干涉仪用于山谷过滤
Magnetic Fabry-Pérot interferometer for valley filtering in a honeycomb-dice model
论文作者
论文摘要
在这里，我们从理论上研究了粒子通过$α-T_3 $模型中组合的电势垒的谷物传播，该电气和磁性屏障模型在蜂窝和骰子晶格之间插值。我们提出，Fabry-Pérot干扰和磁场的结合可为一个山谷提供完美的变速箱，并抑制了另一个山谷的变速箱。当仅存在一个障碍（磁性或电气）时，就不会产生山谷极化电流。通过调整费米能量，这种依赖山谷的特殊行为可以用作山谷过滤。我们的结果表明，可以通过控制磁场的值以及电势垒宽度和高度来实现具有最大电导率和极化的高效山谷过滤。
Here we theoretically investigate the valley-dependent transmission of particles through a combined electric and magnetic barrier in the $α-T_3$ model which interpolates between the honeycomb and the dice lattices. We put forward that the combination of the Fabry-Pérot interferences and the magnetic field leads to a perfect transmission for one valley and a suppression of the transmission for the other valley. When only one of the barriers (magnetic or electric) is present, no valley polarized current can be produced. By tuning the Fermi energy, this valley-dependent peculiar behavior can be used as valley filtering. Our results show that highly efficient valley filtering with maximum conductivity and polarization can be achieved by controlling the value of the magnetic field and the electric barrier width and height.
