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 plot of the density distributions for rectantgular cross sections of Bi₂Se₃ nanoribbons with and (a) 4, (b) 8, (c) 22, (d) 50, (e) 60, (f) 80, (g) 90, and (h) 120 nm, respectively.