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Fig. 8 | eLight

Fig. 8

From: Light control with Weyl semimetals

Fig. 8

Polarization filters and negative refraction. a A circular polarization filter made of a magnetic Weyl semimetal slab in the Faraday configuration. The device can selectively transmit one circular polarized light and reflect the opposite circular polarized light. b The negative refraction of TM-polarized light in a Weyl semimetal with the Voigt configuration. \(\varvec{S}_t\) is the transmitted Poynting vector. \(\varvec{k}_i\), \(\varvec{k}_r\), and \(\varvec{k}_t\) are the incident, reflected, and transmitted wavevectors, respectively. c A scheme of a scanning tunneling microscope (STM) with a probing tip built from three Weyl semimetal layers. These three layers act as an electronic Veselago lens. The electron flow from the top layer is focused on a small spot in the bottom layer. The tight focus may increase the spatial and temporal resolution of the STM. Figures are reproduced with permission from a Ref. [162], Copyright 2021 Elsevier; b Ref. [175], Copyright 2017 the Physical Society of Japan; c Ref. [177], Copyright 2017 American Physical Society

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