Current Carrying Ground State in a Bi-layer Model

Details Current Carrying Ground State in a Bi-layer Model Current Carrying Ground State in a Bi-layer Model

2004-03-23

arxiv.org/abs/cond-mat/0403585v1

Phys. Rev. B 70, 220505(R) (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 5 figures

Scientific paper

10.1103/PhysRevB.70.220505

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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