Magnetic field induced band insulator to Mott insulator transformations in 4-component alkali fermions at half-filling
arXiv:1305.0894 · doi:10.1103/PhysRevA.88.043616
Abstract
Under the influence of an external magnetic field and spin-changing collisions, the band insulator (BI) state of one-dimensional (1D) s-wave repulsively interacting 4-component fermions at half-filling transforms into Mott insulator (MI) states with spontaneously broken translational symmetry: a dimerized state for shallow lattices and a N{é}el state for deep lattices via an intermediate topological state. Since a BI has vanishing entropy per particle, these MI phases could be particularly inviting for experimental realization under the similar conditions as those for K atoms [1], provided the magnetic field is changed adiabatically.
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References in corpus (12)
- Many-Body Physics with Ultracold Gases
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Mott Insulators of Ultracold Fermionic Alkaline Earth Atoms: Underconstrained Magnetism and Chiral Spin Liquid
- Quantum Non-Demolition Detection of Strongly Correlated Systems
- Competing orders in one dimensional spin 3/2 fermionic systems
- Hidden symmetry and quantum phases in spin-3/2 cold atomic systems
- Cooling in strongly correlated optical lattices: prospects and challenges
- Coherent multi-flavour spin dynamics in a fermionic quantum gas
- Spin 3/2 fermions with attractive interactions in a one-dimensional optical lattice: phase diagrams, entanglement entropy, and the effect of the trap
- Symmetry-protected topological phases of alkaline-earth cold fermionic atoms in one dimension
- Non-local order in Mott insulators, Duality and Wilson Loops
- Mott-insulator phases of spin-3/2 fermions in the presence of quadratic Zeeman coupling