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Title: Large optical conductivity of Dirac semimetal Fermi arc surface states
Authors: Shi, Li-kun
Song, Justin Chien Wen
Keywords: Semimetals
Topological Materials
Issue Date: 2017
Source: Shi, L., & Song, J. C. W. (2017). Large optical conductivity of Dirac semimetal Fermi arc surface states. Physical Review B, 96(8), 081410(R)-. doi:10.1103/PhysRevB.96.081410
Series/Report no.: Physical Review B
Abstract: Fermi arc surface states, a hallmark of topological Dirac semimetals, can host carriers that exhibit unusual dynamics distinct from that of their parent bulk. Here we find that Fermi arc carriers in intrinsic Dirac semimetals possess a strong and anisotropic light-matter interaction. This is characterized by a large Fermi arc optical conductivity when light is polarized transverse to the Fermi arc; when light is polarized along the Fermi arc, Fermi arc optical conductivity is significantly muted. The large surface spectral weight is locked to the wide separation between Dirac nodes and persists as a large Drude weight of Fermi arc carriers when the system is doped. As a result, large and anisotropic Fermi arc conductivity provides a novel means of optically interrogating the topological surfaces states of Dirac semimetals.
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.96.081410
Rights: © 2017 American Physical Society (APS). This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society (APS). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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