Fractional quantum Hall states at zero magnetic field

We present a simple prescription to flatten isolated Bloch bands with a nonzero Chern number. We first show that approximate flattening of bands with a nonzero Chern number is possible by tuning ratios of nearest-neighbor and next-nearest-neighbor hoppings in the Haldane model and, similarly, in the...

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Veröffentlicht in:	Physical review letters 2011-06, Vol.106 (23), p.236804-236804, Article 236804
Hauptverfasser:	Neupert, Titus, Santos, Luiz, Chamon, Claudio, Mudry, Christopher
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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