Quantum spin Hall effect in a transition metal oxide Na2IrO3.
We study theoretically the electronic states in a 5d transition metal oxide Na2IrO3, in which both the spin-orbit interaction and the electron correlation play crucial roles. A tight-binding model analysis together with the first-principles band structure calculation predicts that this material is a layered quantum spin Hall system. Because of the electron correlation, an antiferromagnetic order first develops at the edge, and later inside the bulk at low temperatures.
Shitade
Atsuo
A
Department of Applied Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan. shitade@appi.t.u-tokyo.ac.jp
Katsura
Hosho
H
Kunes
Jan
J
Qi
Xiao-Liang
XL
Zhang
Shou-Cheng
SC
Nagaosa
Naoto
N