Indirect Exchange and Ruderman-Kittel-Kasuya-Yosida (RKKY) Interactions in Magnetically-Doped Graphene
arXiv:1301.1779 · doi:10.3390/cryst3010049
Abstract
Magnetically-doped graphene systems are potential candidates for application in future spintronic devices. A key step is to understand the pairwise interactions between magnetic impurities embedded in graphene that are mediated by the graphene conduction electrons. A large number of studies have been undertaken to investigate the indirect exchange, or RKKY, interactions in graphene. Many of these studies report a decay rate faster than expected for a 2-dimensional material and the absence of the usual distance dependent oscillations. In this review we summarize the techniques used to calculate the interaction and present the key results obtained to date. The effects of more detailed parameterisations of the magnetic impurities and graphene host are considered, as are results obtained from ab initio calculations. Since the fast decay of the interaction presents an obstacle to spintronic applications, we focus in particular on the possibility of augmenting the interaction range by a number of methods including doping, spin precession and the application of strain.
30 pages, 7 figures, review article
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Cited by in corpus (8)
- Magnetism in Rare Earth Quasicrystals: RKKY Interactions and Ordering
- RKKY interaction and intervalley processes in p-doped transition metal dichalcogenides
- Indirect RKKY interaction in armchair graphene nanoribbons
- Sublattice imbalance of substitutionally doped nitrogen in graphene
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- Electric field control of the indirect magnetic coupling through a short graphene nanoribbon
- Spin-spin correlations of magnetic impurities in graphene