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arXiv · 0809.1317

Quantum spin Hall effect in a transition metal oxide Na2IrO3

Atsuo Shitade·Hosho Katsura·Jan Kunes·Xiao-Liang Qi·Shou-Cheng Zhang·Naoto Nagaosa
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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.

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Atsuo Shitade, Hosho Katsura, Jan Kunes, Xiao-Liang Qi, Shou-Cheng Zhang, Naoto Nagaosa. 2009-06-25. Quantum spin Hall effect in a transition metal oxide Na2IrO3. https://doi.org/10.1103/physrevlett.102.256403

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