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Title: Dirac semimetal thin films in in-plane magnetic fields
Authors: Siu, Z.B 
Jalil, M.B.A 
Tan, S.G
Issue Date: 2016
Citation: Siu, Z.B, Jalil, M.B.A, Tan, S.G (2016). Dirac semimetal thin films in in-plane magnetic fields. Scientific Reports 6 : 34882. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: In this work we study the effects of in-plane magnetic fields on thin films of the Dirac Semimetal (DSM) Na3Bi where one of the in-plane directions is perpendicular to the k-separation between the two Weyl nodes that exist for each spin orientation. We show numerically that the states localized near the surfaces of these thin films are related to the Fermi arc states in semi-infinite slabs. Due to the anisotropy between the two in-plane directions, the application of a magnetic field along these directions have differing effects. A field parallel to the k space separation between the Weyl nodes leads to a broadening of the surface state band and the formation of an energy plateau, while a perpendicular field shifts the energy where the hole and particle bands meet upwards, and sharpens the tips of the bands. We illustrate the effects of these changes to the dispersion relation by studying the transmission from a source segment without a magnetic field to a drain segment with a field, with the field and interface at various in-plane directions. © The Author(s) 2016.
Source Title: Scientific Reports
ISSN: 20452322
DOI: 10.1038/srep34882
Rights: Attribution 4.0 International
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