2014/12/19 by Yu. I. Latyshev, Yu I. Latyshev, A. P. Orlov +7 · 2 citations
Materials Science · Physics and Astronomy · #Dirac (video compression format) #Dirac fermion #Fermion #Graphene #Graphene research and applications #Massless particle #Quantum and electron transport phenomena #Surface states #Topological Materials and Phenomena #Type (biology) #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1038/srep07578
published as Scientific Reports 4, 7578 (2014) · Strongly revised version of arXiv:1310.0991: new title, abstract, introduction, conclusions, and updated figures. New corresponding author
openalex publication_date 2014/12/19 · arxiv created 2015/03/04 · arxiv updated 2015/03/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
There are two types of intrinsic surface states in solids. The first type is formed on the surface of topological insulators. Recently, transport of massless Dirac fermions in the band of "topological" states has been demonstrated. States of the second type were predicted by Tamm and Shockley long ago. They do not have a topological background and are therefore strongly dependent on the properties of the surface. We study the problem of the conductivity of Tamm-Shockley edge states through direct transport experiments. Aharonov-Bohm magneto-oscillations of resistance are found on graphene samples that contain a single nanohole. The effect is explained by the conductivity of the massless Dirac fermions in the edge states cycling around the nanohole. The results demonstrate the deep connection between topological and non-topological edge states in 2D systems of massless Dirac fermions.