2015/04/09 by Tian-Sheng Zeng, Ce Wang, Hui Zhai
Physics and Astronomy · #Charge (physics) #Charge carrier #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Electron #Fermi Gamma-ray Space Telescope #Fermi gas #Fermion #Lattice (music) #Mott insulator #Optical lattice #Physics #Quantum and electron transport phenomena #Quantum mechanics #Superfluidity #Topological Materials and Phenomena #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevlett.115.095302
published as Phys. Rev. Lett. 115, 095302 (2015) · 5 pages, 6 figures
arxiv created 2015/04/09 · openalex publication_date 2015/08/28 · arxiv updated 2015/09/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Recently it has been theoretically proposed and experimentally demonstrated that a spin-orbit coupled multicomponent gas in a 1D lattice can be viewed as a spinless gas in a synthetic 2D lattice with a magnetic flux. In this Letter we consider interaction effects in such a Fermi gas, and propose these effects can be easily detected in a charge pumping experiment. Using 1/3 filling of the lowest 2D band as an example, in the strongly interacting regime, we show that the charge pumping value gradually approaches a universal fractional value for large spin components and low filling of the 1D lattice, indicating a fractional quantum Hall-type behavior, while the charge pumping value is zero if the 1D lattice filling is commensurate, indicating a Mott insulator behavior. The charge-density-wave order is also discussed.