M. Weis (Author), K. Balin (Author), B. Wilk (Author), T. Sobol (Author), A. Ciavardini (Author), G. Vaudel (Author), V. Juvé (Author), B. Arnaud (Author), Barbara Ressel (Author), Matija Stupar (Author), Giovanni De Ninno (Author)

Abstract

This paper presents a complete study of electronic structures and photoexcited carrier dynamics in topological insulators capped with iron and iron oxide. We combine static and time-resolved angle-resolved photoemission spectroscopies (ARPES, TR-ARPES) with time-resolved optical methods (transient optical reflectivity and transmission). Both single crystal and thin films of Bi2Te3 are studied. We show that monolayers of iron and iron oxide significantly affect the electronic band structure at the interface by shifting the Fermi level into the conduction band, which we explain by a band bending effect, and is confirmed by in situ XPS measurements

Keywords

time resolved spectroscopies;topological insulators;interfaces;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UNG - University of Nova Gorica
UDC: 53
COBISS: 89128195 Link will open in a new window
ISSN: 2469-9969
Views: 1123
Downloads: 20
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Other data

URN: URN:SI:UNG
Type (COBISS): Not categorized
Pages: str. 245110-1-245110-12
Volume: ǂVol. ǂ104
Issue: ǂiss. ǂ24
Chronology: 2021
DOI: 10.1103/PhysRevB.104.245110
ID: 13943722