Skyrmion Excitations in Graphene

Abstract:

By making use of the φ-mapping topological current theory and the decomposition of gauge potential theory, we investigate the skyrmion excitations of (2+1)-dimensional graphene. It is shown that the topological numbers are Hopf indices and Brower degrees. Based on the bifurcation theory of the φ-mapping theory, it is founded that the skyrmions can be generated or annihilated at the limit point (the generation and annihilation of skyrmion-antiskyrmion pairs).

• Periodical: Advanced Materials Research (Volumes 887-888)
• Pages: 960-965
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.887-888.960
• Online since: February 2014
• Authors: Bu Da Zhao*, Ming Xiang
• Keywords: Graphene, Skyrmion

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