By a News Reporter-Staff News Editor at Physics Week -- Data detailed on Nanoribbons have been presented. According to news reporting originating in Beijing, People's Republic of China, by VerticalNews journalists, research stated, "To realize the application of spintronics, possible magnetism in graphene-based material is an important issue to be addressed. At the tight banding level of armchair graphene nanoribbons, there are two flat bands in the band structure, two Van Hove singularities in the density of states, and the introducing of the next-nearest-neighbor hopping term cause high asymmetry in them, which plays a key role in the behavior of magnetic correlation."
The news reporters obtained a quote from the research from Beijing Computational Sciences Research Center, "We further our studies within determinant quantum Monte Carlo simulation to treat the electron-electron interaction. It is found that the armchair graphene nanoribbons show carrier mediated magnetic correlation. In the armchair graphene nanoribbons, the antiferromagnetic correlation dominates around half filling, while the ferromagnetic correlation dominates as electron filling is lower than 0.8. Moreover, the ferromagnetic correlation is strengthened markedly as the next-nearest-neighbor hopping energy increases."
According to the news reporters, the research concluded: "The resultant manipulation of ferromagnetism in graphene-based material may facilitate the development of spintronics."
For more information on this research see: Quantum Monte Carlo Study Of Magnetic Correlation In Graphene Nanoribbons And Quantum Dots. Modern Physics Letters B, 2013;27(21):3-16. Modern Physics Letters B can be contacted at: World Scientific Publ Co Pte Ltd, 5 Toh Tuck Link, Singapore 596224, Singapore. (World Scientific Publishing - www.worldscientific.com/; Modern Physics Letters B - www.worldscinet.com/mplb/mplb.shtml)
Our news correspondents report that additional information may be obtained by contacting P. Gao, Beijing Computat Sci Res Center, Beijing 100084, People's Republic of China. Additional authors for this research include S.H. Liu, L. Tian and T.X. Ma.
Keywords for this news article include: Asia, Beijing, Nanoribbons, Quantum Dots, Nanotechnology, Quantum Physics, Emerging Technologies, People's Republic of China
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