A New Numerical Method for ${\mathbb{Z}}_2$ Topological Insulators with Strong Disorder

Yutaka Akagi, Hosho Katsura, Tohru Koma

We propose a new method to numerically compute the ${\mathbb{Z}}_2$ indices for disordered topological insulators in Kitaev's periodic table. All of the ${\mathbb{Z}}_2$ indices are kn…