- https://www.albasynchrotron.es/ca/actualitat/agenda/personal-dalba/estructura-atomica-i-electronica-del-pristi-i-adsorbat-cobert-bi2se3-0001
- Estructura atòmica i electrònica del pristi i adsorbat cobert Bi2Se3 (0001)
- 2015-07-23T12:00:00+02:00
- 2015-07-23T13:00:00+02:00
- Dr. Holger L. Meyerheim, Max-Planck-Institut fur Mikrostrukturphysik. Halle (Alemanya)
- Quan
-
Jul 23, 2015
de 12:00 a 13:00 (Europe/Madrid / UTC200) - On
- Auditori Maxwell d'ALBA
- Nom de contacte
- Daimí Pérez
- URL de l'esdeveniment
- Lloc web relacionat
- Afegeix un esdeveniment al calendari
-
iCal
Topological insulators (TI) represent an unusual state of matter. While they are insulators in the bulk they are metals at the surface characterized by a linearly dispersing topologically protected surface state ("Dirac cone") bridging the bulk band gap. Owing to its large band gap, Bi2Se3 is an archetype TI and tremendous interest has emerged to investigate the electronic structure and transport properties of its pristine and adsorbate covered (0001) surface. The latter is motivated by the search for new exotic quantum effects and the question whether the topological state is robust against adsorption of magnetic and non-magnetic adsorbates. By contrast, quantitative information concerning the atomically resolved geometric surface structure is surprisingly scarce. This talk gives an overview over recent progress in the analysis of the atomic structure of the pristine and adsorbate covered Bi2Se3 (0001) surface as well as its relation to the electronic properites using surface x-ray diffraction, x-ray absorption spectroscopy, scanning tunneling microscopy and angular resolved photoemission spectroscopy experiments.
