Year: 2011
Type: article
Abstract: We report the formation of a bilayer Bi(111) ultrathin film, which is theoretically predicted to be in a two-dimensional quantum spin Hall state, on a Bi(2)Te(3) substrate. From angle-resolved photoemission spectroscopy measurements and ab initio calculations, the electronic structure of the system can be understood as an overlap of the band dispersions of bilayer Bi and Bi(2)Te(3). Our results show that the Dirac cone is actually robust against nonmagnetic perturbations and imply a unique situation where the topologically protected one- and two-dimensional edge states are coexisting at the surface.
Source: Physical Review Letters
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: Study on physical properties of europium monoxide as a ferromagnetic semiconductor at room temperature, Development of a spin-polarized probe for nanoscale transport measurements and its application to spin transport of surface Rashba systems, Development of a spin-polarized scanning tunneling potentiometry system and its application to micro fabricated surface Rashba systems, Development of Milli-Kelvin Micro-Four-Point Probe Method andResearch of Monolayer Superconductors
OpenAlex ID: W2044294608