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Quantum quasicrystals of spin-orbit-coupled dipolar bosons
Sarang Gopalakrishnan1, Ivar Martin, Eugene A Demler
1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Abstract:
We study quasi-two-dimensional dipolar Bose gases in which the bosons experience a Rashba spin-orbit coupling. We show that the degenerate dispersion minimum due to the spin-orbit coupling, combined with the long-range dipolar interaction, can stabilize a number of quantum crystalline and quasicrystalline ground states. Coupling the bosons to a fermionic species can further stabilize these phases. We estimate that the crystalline and quasicrystalline phases should be detectable in realistic dipolar condensates, e.g., dysprosium, and discuss their symmetries and excitations.
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