Interacting electrons in a two-dimensional disordered environment: Effect of a Zeeman magnetic field

Abstract

The effect of a Zeeman magnetic field coupled to the spin of the electrons on the conducting properties of the disordered Hubbard model is studied. Using the Determinant Quantum Monte Carlo method, the temperature- and magnetic-field- dependent conductivity is calculated,as well as the degree of spin polarization. We find that the Zeeman magnetic field suppresses the metallic behavior present for certain values of interaction- and disorder- strength, and is able to induce a metal-insulator transition at a critical field strength. It is argued that the qualitative features of magnetoconductance in this microscopic model containing both repulsive interactions and disorder are in agreement with experimental findings in two-dimensional electron- and hole-gases in semiconductor structures.

4 pages, 4 figures

References in corpus (6)

• Interaction corrections at intermediate temperatures: magneto-resistance in parallel field
• Particle-Hole Symmetry and the Effect of Disorder on the Mott-Hubbard Insulator
• Delocalizing effect of the Hubbard repulsion for electrons on a two-dimensional disordered lattice
• Effects of a Parallel Magnetic Field on the Metal-Insulator Transition in a Dilute Two-Dimensional Electron System
• The Parallel Magnetoconductance of Interacting Electrons in a Two Dimensional Disordered System
• Spin polarization and transition from metallic to insulating behavior in 2D systems

Cited by in corpus (23)

• Disorder-Driven Non-Fermi Liquid Behavior of Correlated Electrons
• Quantum Critical Points and the Sign Problem
• Magnetization of Planar Four-Fermion Systems
• Non Fermi liquid behavior and continuously tunable resistivity exponents in the Anderson-Hubbard model at finite temperature
• Cooling Atomic Gases With Disorder
• Determinant Quantum Monte Carlo Study of the Screening of the One Body Potential near a Metal-Insulator Transition
• Conductivity of Silicon Inversion Layers: comparison with and without in-plane magnetic field
• Destruction of Superconductivity by Impurities in the Attractive Hubbard Model
• Static Screening and Delocalization Effects in the Hubbard-Anderson Model
• Interacting lattice electrons with disorder in two dimensions: Numerical evidence for a metal-insulator transition with a universal critical conductivity
• An Effective Field Theory Model for One-Dimensional $\mathrm{CH}$ Chains: Effects at Finite Chemical Potential, Temperature and External Zeeman Magnetic Field
• Inducing a metal-insulator transition in disordered interacting Dirac fermion systems via an external magnetic field
• Doping-dependent metal-insulator transition in a disordered Hubbard model
• Magnetic properties of interacting, disordered electron systems in d=2 dimensions
• Strong-coupling perturbative study of the disordered Hubbard model on honeycomb lattice
• Phase transitions in the binary-alloy Hubbard model: insight from strong-coupling perturbation theory
• Anderson-Mott transition in a disordered Hubbard model with correlated hopping
• Quantum Monte Carlo Study of Disordered Fermions
• Doping driven metal-insulator transition in disordered graphene
• Magnetic phase transition in disordered interacting Dirac fermion systems via the Zeeman field
• Temperature effects on the magnetization of quasi-one-dimensional Peierls distorted materials
• Interaction-Induced Gradients Across a Confined Fermion Lattice
• On-Site Interaction Effects on Localization : Dominance of Non-Universal Contributions