Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-09-08
Phys. Rev. Lett. 102, 256403 (2009)
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages, 2 figures
Scientific paper
10.1103/PhysRevLett.102.256403
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.
Katsura Hosho
Kunes Jan
Nagaosa Naoto
Qi Xiao-Liang
Shitade Atsuo
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