Chiral magnetic effect in the absence of Weyl node

Ming Che Chang, Min Fong Yang

研究成果: 雜誌貢獻期刊論文同行評審

25 引文 斯高帕斯(Scopus)


The nodal points in a Weyl semimetal are generally considered as the causes of the chiral anomaly and the chiral magnetic effect (CME). Employing a linear-response analysis of a two-band lattice model, we show that the Weyl nodes and thus the chirality are not required for the CME, while they remain crucial for the chiral anomaly. Similar to the anomalous Hall effect, the CME results directly from the Berry curvature of energy bands, even when there is no monopole source from the Weyl nodes. Therefore, the phenomenon of the CME could be observed in a wider class of materials. Motivated by this result, we suggest that the nodeless CME may appear in three-dimensional quantum anomalous Hall insulators, but after they become metallic due to the band deformation caused by inversion symmetry breaking.

期刊Physical Review B - Condensed Matter and Materials Physics
出版狀態已發佈 - 2015 11月 4

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學


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