Quantum stripe ordering in optical lattices.
نویسندگان
چکیده
We predict the robust existence of a novel quantum orbital stripe order in the p-band Bose-Hubbard model of two-dimensional triangular optical lattices with cold bosonic atoms. An orbital angular momentum moment is formed on each site exhibiting a stripe order both in the superfluid and Mott-insulating phases. The stripe order spontaneously breaks time-reversal, lattice translation, and rotation symmetries. In addition, it induces staggered plaquette bond currents in the superfluid phase. Possible signatures of this stripe order in the time of flight experiment are discussed.
منابع مشابه
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Stripe phase ordering as quantum interference phenomenon.
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عنوان ژورنال:
- Physical review letters
دوره 97 19 شماره
صفحات -
تاریخ انتشار 2006