Graphene magnetoresistance in a parallel magnetic field: Spin polarization effect

Abstract

We develop a theory for graphene magnetotransport in the presence of carrier spin polarization as induced, for example, by the application of an in-plane magnetic field ($B$) parallel to the 2D graphene layer. We predict a negative magnetoresistance $\sigma \propto B^2$ for intrinsic graphene, but for extrinsic graphene we find a non-monotonic magnetoresistance which is positive at lower magnetic fields (below the full spin-polarization) and negative at very high fields (above the full spin-polarization). The conductivity of the minority spin band $(-)$ electrons does not vanish as the minority carrier density ($n_{-}$) goes to zero. The residual conductivity of $(-)$ electrons at $n_{-}=0$ is unique to graphene. We discuss experimental implications of our theory.

5 pages, 3 figures

References in corpus (21)

• Electric Field Effect in Atomically Thin Carbon Films
• The electronic properties of graphene
• Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
• Ultrathin epitaxial graphite: 2D electron gas properties and a route toward graphene-based nanoelectronics
• Suspended Graphene: a bridge to the Dirac point
• Dielectric function, screening, and plasmons in 2D graphene
• Charged Impurity Scattering in Graphene
• Carrier transport in 2D graphene layers
• Temperature dependent transport in suspended graphene
• Measurement of Scattering Rate and Minimum Conductivity in Graphene
• Quantum Hall Ferromagnetism in Graphene
• Friedel oscillations, impurity scattering and temperature dependence of resistivity in graphene
• Spin Degree of Freedom in a Two-Dimensional Electron Liquid
• Single particle relaxation time versus transport scattering time in a 2D graphene layer
• Magnetoresistance of a two-dimensional electron gas in a parallel magnetic field
• Parallel Magnetic Field Induced Transition in Transport in the Dilute Two-Dimensional Hole System in GaAs
• Parallel magnetic field induced giant magnetoresistance in low density {\it quasi}-two dimensional layers
• In-plane magnetic field-induced spin polarization and transition to insulating behavior in two-dimensional hole systems
• The effect of a parallel magnetic field on the Boltzmann conductivity and the Hall coefficient of a disordered two dimensional Fermi liquid
• Response to Parallel Magnetic Field of a Dilute 2D Electron System across the Metal-Insulator Transition
• In-Plane Magnetodrag between Dilute Two-Dimensional Systems

Cited by in corpus (10)

• Rippled Graphene in an In-Plane Magnetic Field: Effects of a Random Vector Potential
• Energy spectrum of graphene multilayers in a parallel magnetic field
• Effects of spin-orbit coupling and magnetic field on electronic properties of Germanene structure
• Hysteresis loops of the magnetoconductance in graphene devices
• Magnetotransport in single layer graphene in a large parallel magnetic field
• Magnetoresistance of double layer hybrid system in tilted magnetic field
• Spin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling
• Spin-dependent transport for armchair-edge graphene nanoribbons between ferromagnetic leads
• Inducing a metal-insulator transition in disordered interacting Dirac fermion systems via an external magnetic field
• Magnetic phase transition in disordered interacting Dirac fermion systems via the Zeeman field