Nonlinear electric transport in graphene with magnetic disorder
arXiv:1406.3743 · doi:10.1103/PhysRevB.90.085412
Abstract
The influence of magnetic impurities on the transport properties of graphene is investigated in the regime of strong applied electric fields. As a result of electron-hole pair creation, the response becomes nonlinear and dependent on the magnetic polarization. In the paramagnetic phase, time reversal symmetry is statistically preserved, and transport properties are similar to the clean case. At variance, in the antiferromagnetic phase, the system undergoes a transition between a superdiffusive to a subdiffusive spreading of a wave packet, signaling the development of localized states. This critical regime is characterized by the appearance of electronic states with a multifractal geometry near the gap. The local density of states concentrates in large patches having a definite charge-spin correlation. In this state, the conductivity tends to half the minimum conductivity of clean graphene.
9 pages, 8 figures
References in corpus (16)
- The electronic properties of graphene
- Andreev reflection and Klein tunneling in graphene
- A self-consistent theory for graphene transport
- Emergence of magnetism in graphene materials and nanostructures
- The Kernel Polynomial Method
- Colloquium: The transport properties of graphene: An introduction
- Selective transmission of Dirac electrons and ballistic magnetoresistance of \textit{n-p} junctions in graphene
- Diluted Graphene Antiferromagnet
- Topological delocalization of two-dimensional massless Dirac fermions
- The Schwinger mechanism and graphene
- Kondo Quantum Criticality of Magnetic Adatoms in Graphene
- Orbital selective and tunable Kondo effect of magnetic adatoms on graphene: Correlated electronic structure calculations
- Dynamics of the particle - hole pair creation in graphene
- Magnetic Impurities in Graphene
- Dynamical Aspects of 2D Quantum Percolation
- Spin-Polarized Semiconductor Induced by Magnetic Impurities in Graphene