Magnetism and magnetotransport in disordered graphene
arXiv:0906.2194 · doi:10.1103/PhysRevB.80.245408
Abstract
We perform Monte Carlo simulations to study the interplay of structural and magnetic order in single layer graphene covered with magnetic adatoms. We propose that the presence of ripples in the graphene structure can lead to clustering of the adatoms and to a variety of magnetic states such as super-paramagnetism, antiferromagnetism, ferromagnetism and spin glass behavior. We derive the magnetization hysteresis and also the magnetoresistance curves in the variable range hopping regime, which can provide experimental signatures for ripple induced clustering and magnetism. We propose that the magnetic states in graphene can be controlled by gate voltage and coverage fraction.
8 pages, 7 figures. Expanded version
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- Negative to Positive Crossover of Magnetoresistance in Layered WS2 with Ohmic Contact
- Hysteresis loops of the magnetoconductance in graphene devices
- Magnetic effects in sulfur-decorated graphene
- Weak ferromagnetism of antiferromagnetic domains in graphene with defects
- Magnetic exchange mechanism for electronic gap opening in graphene
- Thermodynamics of localized magnetic moments in a Dirac conductor
- Controlling Spin-Polarization in Graphene by Cloaking Magnetic and Spin-Orbit Scatterers
- Electronic orbital angular momentum and magnetism of graphene