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High temperature fractional quantum Hall states
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High temperature fractional quantum Hall states
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We show that a suitable combination of geometric frustration, ferromagnetism and spin-orbit interactions can give rise to nearly flat bands with a large bandgap and non-zero Chern number. Partial filling of the flat band 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.
Forward citations
Cited by 2 Pith papers
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Non-Abelian topological superconductivity from melting Abelian fractional Chern insulators
Bandwidth tuning can melt a single ν=2/3 Jain fractional Chern insulator into five distinct superconductors, two with non-Abelian order, with higher-charge variants predicted at general Jain fillings.
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Superconductivity and non-Fermi liquid metals in a charge-1/3 anyon fluid
Doping a fractional Chern insulator yields an anyon fluid that can form an SC* superconductor with residual Z2 order or a non-Fermi liquid Z3 orthogonal metal.
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