Atomic and Electronic Structure of the Clean and Adsorbate Covered (0001) Surface of the Topological Insulator Bi2Se3 (Phys. Status Solidi RRL 11/2018). Issue 11 (5th November 2018)

• Record Type: Journal Article
• Authors: Meyerheim, Holger L.; Tusche, Christian
• Other Names: Balatsky Alexander V. guestEditor.; Brena Barbara guestEditor.; Herper Heike C. guestEditor.; Sanyal Biplab guestEditor.
• Is Part Of: Physica status solidi. Volume 12:Issue 11(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-11-05
• Subjects: Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.201870337
• Languages: English
• ISSNs: 1862-6254

Abstract

Abstract : Bismuth selenide is a prototype 3D topological insulator characterized by a Dirac surface state, which exhibits a pronounced chirality due to spin‐momentum locking. One key property is that the topological protection can be lifted by a magnetic field oriented perpendicular to the surface involving an opening of a gap at the Dirac point which is decisive for the realization of exotic quantum effects such as the Quantum Anomalous Hall effect. In article no.1800078, Holger Meyerheim and Christian Tusche investigate the atomic and electronic structure of pristine and adsorbate covered Bi2 Se3 (0001) using surface X‐ray diffraction, X‐ray absorption fine structure spectroscopy and spin‐ and momentumresolved photoemission spectroscopy. It is shown that the topological surface state is modified even by subtle structural modifications induced by non‐magnetic adsorbates like carbon interstitials or gold residing in bismuth substitutional sites.