Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 85, Issue -, Pages 280-284Publisher
ELSEVIER
DOI: 10.1016/j.physe.2016.08.028
Keywords
SiC; Magnetic properties; First-principles calculation; Antiferromagnetic; Haldane-Anderson model
Funding
- Shanghai Committee of Science and Technology, China [ZHT. K1507]
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The magnetic properties of SiC monolayer with different TM atoms and substitutional sites are investigated using first-principles method. Magnetism is observed for all the TM dopants. The magnetic moments and binding energies are quite different between Si (TMsi) and C (TMc) sites. Dependent to the larger magnetic moments and binding energy, we also investigate the interaction between two Mn atoms in the TMsi system. The results show that the ferromagnetic states are originated by the p-d hybridization mechanism between Mn and its neighboring C atoms. Moreover, the antiferromagnetic coupling is observed with increasing Mn-Mn distance, which can be explained by two-impurity Haldane-Anderson model using quantum Monte Carlo method.
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