论文标题
Meissner筛选在轻驱动超导体中的参数控制
Parametric control of Meissner screening in light-driven superconductors
论文作者
论文摘要
我们使用半经典$ u（1）$ lattice量规理论研究了参数驱动的超导体的meissner效应。具体而言，我们会定期驱动$ z $轴隧道，如果从等离子体频率中蓝色的驾驶频率，则在低频下$ z $轴电导率的假想部分增强。这已被提议作为YBA $ _2 $ c $ c $ _3 $ o $ $ _ {7-δ} $（YBCO）的轻增强层中层运输的可能机制。与这种电导率的增强相反，我们发现磁场的筛选在蓝色周期驾驶中的效率不如平衡，而它显示出一种可以增强的趋势，以增强红色驱动。
We investigate the Meissner effect in a parametrically driven superconductor using a semiclassical $U(1)$ lattice gauge theory. Specifically, we periodically drive the $z$-axis tunneling, which leads to an enhancement of the imaginary part of the $z$-axis conductivity at low frequencies if the driving frequency is blue-detuned from the plasma frequency. This has been proposed as a possible mechanism for light-enhanced interlayer transport in YBa$_2$C$_3$O$_{7-δ}$ (YBCO). In contrast to this enhancement of the conductivity, we find that the screening of magnetic fields is less effective than in equilibrium for blue-detuned driving, while it displays a tendency to be enhanced for red-detuned driving.
