Mott Plateau in Trapped Bose-Fermi Mixture
arXiv:0805.3069 · doi:10.1143/JPSJ.77.054301
Abstract
Boson-Fermion mixture confined on an optical lattice is numerically studied. Mott-plateau like behavior is observed under certain conditions in the density profile of the bosons and fermions as one sees in bosonic atoms in a trap potential. In the Mott plateau area, the total number of the bosons and fermions at each site is kept to an integer value but both local density of the bosons and that of the fermions take some intermediate values. Unlike bosonic or fermionic Mott insulators, the bosons and fermions can move even in the Mott plateau area by exchanging their positions. With Monte Carlo simulations we demonstrate the formation of the Mott plateau, examine the property of the bosons and fermions by measuring the densities and local density fluctuations, and give discussion on this rather new state.
8 pages, 2 figures
References in corpus (9)
- A quasi-pure Bose-Einstein condensate immersed in a Fermi sea
- Two-species mixture of quantum degenerate Bose and Fermi gases
- Fermi-Bose quantum degenerate ^40 K - ^87 Rb mixture with attractive interaction
- Mott Domains of Bosons Confined on Optical Lattices
- Imaging the Mott Insulator Shells using Atomic Clock Shifts
- Quantum Monte Carlo simulations of confined bosonic atoms in optical lattices
- Production of a Fermi gas of atoms in an optical lattice
- Collisional properties of ultracold K-Rb mixtures
- Mott transition in one-dimensional boson-fermion mixtures