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Topological transport in a spin-orbit coupled bosonic Mott insulator | | C. H. Wong
; R.A. Duine
; | | Date: |
29 Nov 2012 | | Abstract: | We investigate topological transport in a spin-orbit coupled bosonic Mott
insulator. We show that interactions can lead to anomalous quasi-particle
dynamics even when the spin-orbit coupling is abelian. To illustrate the
latter, we consider the spin-orbit coupling realized in the experiment of Lin
extit{et al}. [Nature (London) extbf{471}, 83 (2011)]. For this spin-orbit
coupling, we compute the quasiparticle dispersions and spectral weights, the
interaction-induced momentum space Berry curvature, and the momentum space
distribution of spin density, and propose experimental signatures. Furthermore,
we find that in our approximation for the single-particle propagator, the
ground state can in principle support an integer Hall conductivity if the sum
of the Chern numbers of the hole bands is nonzero. | | Source: | arXiv, 1211.6924 | | Services: | Forum | Review | PDF | Favorites | |
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