2018/09/23 by Yan Liu, Junkun Zhao · 15 citations
Materials Science · Physics and Astronomy · #Diagonal #Graphene research and applications #Holography #Phase (matter) #Phase transition #Quantum #Quantum and electron transport phenomena #Quantum phase transition #Semimetal #Topological Materials and Phenomena #Weyl semimetal #cond-mat.str-el #hep-th
paper · pdf · doi:10.1007/jhep12(2018)124
published in Journal of High Energy Physics 2018(12) (Springer Nature) · 24 pages, 7 figures
arxiv created 2018/09/23 · openalex created_date 2018/09/27 · openalex publication_date 2018/12/01 · arxiv updated 2019/01/30 · openalex updated_date 2026/08/05
A bstract We study a holographic model which exhibits a quantum phase transition from the strongly interacting Weyl semimetal phase to an insulating phase. In the holographic insulating phase there is a hard gap in the real part of frequency dependent diagonal conductivities. However, the anomalous Hall conductivity is nonzero at zero frequency, indicting that it is a Chern insulator. This holographic quantum phase transition is always of first order, signified by a discontinuous anomalous Hall conductivity at the phase transition, in contrast to the very continuous holographic Weyl semimetal/trivial semimetal phase transition. Our work reveals the novel phase structure of strongly interacting Weyl semimetal.