Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.256403
Keywords
ab initio calculations; antiferromagnetism; band structure; quantum Hall effect; sodium compounds; spin Hall effect; spin-orbit interactions; tight-binding calculations
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Funding
- MEXT [15104006, 16076205, 17105002, 19048015, 19048008]
- JSPS
- Deutsche Forschungsgemeinschaft [SFB 484]
- NSF [DMR-0342832]
- U. S. Department of Energy, Office of Basic Energy Sciences [DE-AC03-76SF00515]
- Grants-in-Aid for Scientific Research [15104006] Funding Source: KAKEN
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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.
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