Spin relaxation related to the edge scattering in graphene
arXiv:1404.6740 · doi:10.1103/PhysRevB.90.035408
Abstract
We discuss the role of spin-flip scattering of electrons from the magnetized edges in graphene nanoribbons. The spin-flip scattering is associated with strong fluctuations of the magnetic moments at the edge. Using the Boltzmann equation approach, which is valid for not too narrow nanoribbons, we calculate the spin relaxation time in the case of Berry-Mondragon and zigzag graphene edges. We also consider the case of ballistic nanoribbons characterized by very long momentum relaxation time in the bulk, when the main source of momentum and spin relaxation is the spin-dependent scattering at the edges. We found that in the case of zigzag edges, an anomalous spin diffusion is possible, which is related to very weak spin-flip scattering of electrons gliding along the nanoribbon edge.
arXiv comment9 pages, 7 figures
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Cited by in corpus (4)
- Spin transport in graphene nanostructures
- Suppression of decoherence in a graphene monolayer ring
- Crossover from Room-temperature Double-channel Ballistic Transport to Single-channel Ballistic Transport in Zigzag Graphene Nanoribbons
- Anomalous Bloch oscillation and electrical switching of edge magnetization in bilayer graphene nanoribbon