Electronic states and spin-filter effect in three-dimensional topological insulator Bi<sub>2</sub>Se<sub>3</sub> nanoribbons

Electronic states and spin-filter effect in three-dimensional topological insulator Bi₂Se₃ nanoribbons

Liu Genhua^{1, 2, †}, Xiao Pingguo¹, Xu Piaorong¹, Zhou Huiying¹, Zhou Guanghui²

(color online) Contour plots of the density distributions for a rectangular cross section of a Bi₂Se₃ nanoribbon under different electric fields at ε=90 meV. On the upper panel, (a) , (b) , (c) , and (d) V/m. On the lower panel, (e) , (f) , (g) , and (h) .