Magnetism Localization in Spin-Polarized One-Dimensional Anderson-Hubbard Model
arXiv:0810.3953 · doi:10.1103/PhysRevB.79.184417
Abstract
In order to study an interplay of disorder, correlation, and spin imbalance on antiferromagnetism, we systematically explore the ground state of one-dimensional spin-imbalanced Anderson-Hubbard model by using the density-matrix renormalization group method. We find that disorders localize the antiferromagnetic spin density wave induced by imbalanced fermions and the increase of the disorder magnitude shrinks the areas of the localized antiferromagnetized regions. Moreover, the antiferromagnetism finally disappears above a large disorder. These behaviors are observable in atomic Fermi gases loaded on optical lattices and disordered strongly-correlated chains under magnetic field.
References in corpus (19)
- Many-Body Physics with Ultracold Gases
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Anderson localization of a non-interacting Bose-Einstein condensate
- Direct observation of Anderson localization of matter-waves in a controlled disorder
- A Mott insulator of fermionic atoms in an optical lattice
- Metallic and Insulating Phases of Repulsively Interacting Fermions in a 3D Optical Lattice
- Experimental observation of the Anderson transition with atomic matter waves
- Observation of Phase Separation in a Strongly-Interacting Imbalanced Fermi Gas
- New Trends in Density Matrix Renormalization
- Direct Observation of the Superfluid Phase Transition in Ultracold Fermi Gases
- Deformation of a Trapped Fermi Gas with Unequal Spin Populations
- Pairing without Superfluidity: The Ground State of an Imbalanced Fermi Mixture
- Density-matrix renormalization group methods for momentum- and frequency-resolved dynamical correlation functions
- Interacting Fermi Gases in Disordered One-Dimensional Lattices
- Effects of disorder on atomic density waves and spin-singlet dimers in one-dimensional optical lattices
- Stripe Formation in Fermionic Atoms on 2-D Optical Lattice inside a Box Trap: DMRG Studies for Repulsive Hubbard Model with Open Boundary Condition
- Mott Phase in Polarized Two-component Atomic Fermi Lattice Gas:A Playground for S=1/2 Heisenberg Model in Magnetic Field
- Hole Localization in One-Dimensional Doped Anderson-Hubbard Model