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Current Carrying Ground State in a Bi-layer Model

Sylvain Capponi·Congjun Wu·Shou-Cheng Zhang
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Abstract

Strongly interacting systems have been conjectured to spontaneously develop current carrying ground states under certain conditions. We conclusively demonstrate the existence of a commensurate staggered interlayer current phase in a bi-layer model by using the recently discovered quantum Monte-Carlo algorithm without the sign problem. A pseudospin SU(2) algebra and the corresponding anisotropic spin-1 Heisenberg model are constructed to show the competition among the staggered interlayer current, rung singlet and charge density wave phases.

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Sylvain Capponi, Congjun Wu, Shou-Cheng Zhang. 2004-03-23. Current Carrying Ground State in a Bi-layer Model. https://doi.org/10.1103/physrevb.70.220505

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