We present an overview of the new family of semiconductors BiTeX (X = I, Br, Cl) from the perspective of angle resolved photoemission spectroscopy. The strong band bending occurring at the surface potentially endows them with a large flexibility, as they are capable of hosting both hole and electron conduction, and can be modified by inclusion or adsorption of foreign atoms. In addition, their trigonal crystal structure lacks a center of symmetry and allows for both bulk and surface spin-split bands at the Fermi level. We elucidate analogies and differences among the three materials, also in the light of recent theoretical and experimental work.
|Number of pages||6|
|Journal||Journal of Electron Spectroscopy and Related Phenomena|
|Publication status||Published - 2015 May 1|
Bibliographical noteFunding Information:
We acknowledge support by the Swiss NSF , namely through grants No. PP00P2-133552 (G.A. and O.V.Y) and PA00P21-36420 (L.M.). We thank Yeongkwan Kim and Beomyoung Kim for technical support on Merlin. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 . Electronic structure calculations have been performed at the Swiss National Supercomputing Centre (CSCS) under project s515.
©2014 Elsevier B.V. All rights reserved.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Physical and Theoretical Chemistry