论文标题
散布的石墨烯单层中的轻度放大Landau-Zener电导率：光催化真空不稳定性的模拟
Light-amplified Landau-Zener conductivity in gapped graphene monolayers: a simulacrum of photo-catalyzed vacuum instability
论文作者
论文摘要
当高强度的高频电波和强烈的恒定电场在薄片的平面上超级叠加时，在费米表面附近，电子中电子的间横向跃迁在费米表面附近受到了极高的刺激。我们认为这种现象相当于弗朗兹 - 卡尔德斯效应，特别注意与快速振荡场相关的光子能量在石墨烯间隙以下，因此量子过渡仍然通过隧道效应而通过一photon吸收通道促进。在考虑的参数体制中，与所述设置相关的照片催化电流显示出仅由强场驱动的一个数量级。讨论了缓解田间有限扩展影响的条件，并得出了残留电流密度的公式。我们评估的鲁棒性支持在石墨烯中检测这种现象的可行性，从而对QED中动态辅助的施温格机制进行了模拟。
Interband transitions of electrons in a gapped graphene monolayer are highly stimulated near the Fermi surface when a high-frequency electric wave of weak intensity and a strong constant electric field are superposed in the plane of the flake. We consider this phenomenon equivalent to the Franz-Keldysh effect, paying particular attention to the regime where the photon energy linked to the fast-oscillating field is just below the graphene gap, so that the quantum transitions still occur through tunneling effects while being facilitated by the one-photon absorption channel. In the considered parameter regime the photo-catalyzed current linked to the described setup is shown to exceed the one driven by the strong field solely by several orders of magnitude. Conditions to relieve the impact of the field's finite extension are discussed, and a formula for the residual current density is derived. The robustness of our assessment supports the viability of detecting this phenomenon in graphene, thus providing a simulation of the dynamically-assisted Schwinger mechanism in QED.
