2018/03/14 by M. Hakl, Michael Hakl, S. Tchoumakov +23 · 18 citations
Materials Science · Physics and Astronomy · #Band gap #Condensed matter physics #Dirac (video compression format) #Electron #Electronic and Structural Properties of Oxides #Graphene research and applications #Physics #Quantum mechanics #Scale (ratio) #Semimetal #Spectroscopy #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.97.115206
published in Physical review. B./Physical review. B 97(11) (American Physical Society) · to be published in Phys. Rev. B
arxiv created 2018/03/14 · openalex publication_date 2018/03/26 · arxiv updated 2018/03/28 · openalex created_date 2018/03/29 · openalex updated_date 2026/08/05
Cadmium arsenide (Cd3As2) has recently became conspicuous in solid-state physics due to several reports proposing that it hosts a pair of symmetry-protected 3D Dirac cones. Despite vast investigations, a solid experimental insight into the band structure of this material is still missing. Here we fill one of the existing gaps in our understanding of Cd3As2, and based on our Landau-level spectroscopy study, we provide an estimate for the energy scale of 3D Dirac electrons in this system. We find that the appearance of such charge carriers is limited---contrary to a widespread belief in the solid-state community---to a relatively small energy scale (below 40 meV).