Wave Packet Propagation Through Randomly Distributed Scattering Centers in Graphene
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We numerically investigate the wave packet propagation in graphene in the presence of randomly distributed circular potential steps. The calculations are performed within the continuum model, and the time propagation is made by a simple computational technique, based on the split-operator method. Our results show that, despite the Klein tunnelling effect, the presence of these potential steps significantly reduces the transmission probabilities, specially for higher concentration of scatterers and higher potential heights.
KeywordsWave Packet Propagation Exchange Scattering Klein Tunneling Potential Height Transmission Probability
The work of Kh. Rakhimov was supported by Matsumae International Foundation (Ref. Nr. Gno: 12G09) and partially supported by VolkswagenStiftung (Ref. Nr. Az.: 86 140). A. Chaves and G.A. Farias gratefully acknowledge financial support from the Brazilian Council for Research (CNPq).