Abstract
We show that a suitable combination of geometric frustration, ferromagnetism, and spin-orbit interactions can give rise to nearly flatbands with a large band gap and nonzero Chern number. Partial filling of the flatband can give rise to fractional quantum Hall states at high temperatures (maybe even room temperature). While the identification of material candidates with suitable parameters remains open, our work indicates intriguing directions for exploration and synthesis.
- Received 14 December 2010
DOI:https://doi.org/10.1103/PhysRevLett.106.236802
© 2011 American Physical Society
Viewpoint
Fractional quantum Hall effect without Landau levels
Published 6 June 2011
Researchers develop models that could exhibit a fractional quantum Hall effect in the absence of an external magnetic field.
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