Fig. 2: Simulation of negative transmission. | npj 2D Materials and Applications

Fig. 2: Simulation of negative transmission.

From: Dirac fermion metagratings in graphene

Fig. 2

Negative-transmission-based deflection of electron beams at (a) θWA = 5°, (b) θWA = 20°, and (c) θWA = 45°. The bias and the lattice spacing are (a) V = 977 meV and d = 14 nm, (b) V = 970 meV and d = 15 nm, and (c) V = 940 meV and d = 20 nm. In all the cases, the QD radius is Rs = 3.5 nm and the incident electrons have a fixed energy E = 148 meV. The Gaussian beam has a waist radius w = 3λ.

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