Quantum spin Hall effect in a transition metal oxide Na2IrO3

Abstract

We study theoretically the electronic states in a $5d$ transition metal oxide Na${}_2$IrO${}_3$, in which both the spin-orbit interaction and the electron correlation play crucial roles. Tight-binding model analysis together with the fisrt-principles band structure calculation predicts that this material is a layered quantum spin Hall system. Due to the electron correlation, an antiferromagnetic order first develops at the edge, and later inside the bulk at low temperatures.

5 pages, 2 figures

References in corpus (4)

• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• The Helical Liquid and the Edge of Quantum Spin Hall Systems
• Helical Metal Inside a Topological Band Insulator

Cited by in corpus (2)

• Magnetically Hidden Order of Kramers Doublets in $d^1$ Systems: Sr${}_2$VO${}_4$
• Correlations in a band insulator