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- Title
Strong and Weak 3D Topological Insulators Probed by Surface Science Methods.
- Authors
Morgenstern, Markus; Pauly, Christian; Kellner, Jens; Liebmann, Marcus; Pratzer, Marco; Bihlmayer, Gustav; Eschbach, Markus; Plucinski, Lukacz; Otto, Sebastian; Rasche, Bertold; Ruck, Michael; Richter, Manuel; Just, Sven; Lüpke, Felix; Voigtländer, Bert
- Abstract
The contributions of surface science methods to discover and improve 3D topological insulator materials are reviewed herein, illustrated with examples from the authors' own work. In particular, it is demonstrated that spin‐polarized angular‐resolved photoelectron spectroscopy is instrumental to evidence the spin‐helical surface Dirac cone, to tune its Dirac point energy toward the Fermi level, and to discover novel types of topological insulators such as dual ones or switchable ones in phase change materials. Moreover, procedures are introduced to spatially map potential fluctuations by scanning tunneling spectroscopy and to identify topological edge states in weak topological insulators.
- Subjects
TOPOLOGICAL insulators; DIRAC function; INSULATING materials; PHASE change materials; TUNNELING spectroscopy; PHOTOELECTRON spectroscopy
- Publication
Physica Status Solidi (B), 2021, Vol 258, Issue 1, p1
- ISSN
0370-1972
- Publication type
Academic Journal
- DOI
10.1002/pssb.202000060