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arXiv · 1407.7935

Existence of strong-pairing quantum Hall phase in bilayer cold atom systems with dipolar interactions

Yuhui Zhang·E. H. Rezayi·Kun Yang
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Abstract

We study bilayer fermionic cold atom systems with dipolar interactions, as well as a two-component tunable pseudopotential (TCTP) model which keeps only the zeroth and first Haldane pseudopotentials, at total Landau level filling factor 1/2. Our numerical results on the TCTP model indicates that Haldane-Rezayi state describes the critical point between strong and weak d-wave pairing quantum Hall phases. Further increasing the attractive zeroth pseudopotentials, the system transits from the strong-pairing phase to a stripe phase, and then to a cluster phase (or phase separation). The dipolar interaction can be mapped onto the TCTP model in the strong-pairing phase, if high order pseudopotentials are ignored. Our numerical results show that this is indeed the case, so the strong-pairing phase can be realized in the cold atom system.

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Yuhui Zhang, E. H. Rezayi, Kun Yang. 2014-07-30. Existence of strong-pairing quantum Hall phase in bilayer cold atom systems with dipolar interactions. https://doi.org/10.1103/physrevb.90.165102

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