1.
Adv Mater
; 29(3)2017 Jan.
Artigo
em Inglês
| MEDLINE
| ID: mdl-27859857
RESUMO
The topological properties of lead-tin chalcogenide topological crystalline insulators can be widely tuned by temperature and composition. It is shown that bulk Bi doping of epitaxial Pb1-x Snx Te (111) films induces a giant Rashba splitting at the surface that can be tuned by the doping level. Tight binding calculations identify their origin as Fermi level pinning by trap states at the surface.