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- W1991536108 abstract "The scattering of two-dimensional (2D) massless Dirac electrons is investigated in the presence of a random array of circular mass barriers. The inverse momentum relaxation time and the Hall factor are calculated and used to obtain parallel and perpendicular resistivity components within linear transport theory. We found a nonzero perpendicular resistivity component which has opposite sign for electrons in the different $K$ and ${K}^{ensuremath{'}}$ valleys. This property can be used for valley filter purposes. The total cross section for scattering on penetrable barriers exhibits resonances due to the presence of quasibound states in the barriers that show up as sharp gaps in the cross section while for Schrodinger electrons they appear as peaks." @default.
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- W1991536108 date "2011-12-12" @default.
- W1991536108 modified "2023-09-24" @default.
- W1991536108 title "Scattering of Dirac electrons by circular mass barriers: Valley filter and resonant scattering" @default.
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- W1991536108 doi "https://doi.org/10.1103/physrevb.84.245413" @default.
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