论文标题
黑洞的幻影：不均匀倾斜的Weyl半含量的电子镜头和浆果曲率效应
Black hole mirages: electron lensing and Berry curvature effects in inhomogeneously tilted Weyl semimetals
论文作者
论文摘要
我们研究具有空间变化的节点倾斜曲线的Weyl半学中的电子传输。我们发现，可以通过明智选择的倾斜曲线来准确指导电子流。在广泛的参数状态下，我们表明电子流通过类似于管理重力吸引力的运动的半经典运动方程很好地描述了电子流。这个类比提供了一种物理上透明的工具，用于设计诸如电子镜片之类的潮汐设备。与重力的类比规定了臭名昭著的对不均匀固体的全面描述。与微观晶格模拟的比较表明，仅对远离模拟黑洞的轨迹仅有效。我们最终对浆果曲率驱动的横向运动发表评论，并将后者与旋转进动物理学联系起来。
We study electronic transport in Weyl semimetals with spatially varying nodal tilt profiles. We find that the flow of electrons can be guided precisely by judiciously chosen tilt profiles. In a broad regime of parameters, we show that electron flow is described well by semiclassical equations of motion similar to the ones governing gravitational attraction. This analogy provides a physically transparent tool for designing tiltronic devices like electronic lenses. The analogy to gravity circumvents the notoriously difficult full-fledged description of inhomogeneous solids. A comparison to microscopic lattice simulations shows that it is only valid for trajectories sufficiently far from analogue black holes. We finally comment on the Berry curvature-driven transverse motion and relate the latter to spin precession physics.
