Hot-carrier and optical-phonon ultrafast dynamics in the topological insulator Bi[sub]2Te[sub]3 upon iron deposition on its surface

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

Povzetek

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

Ključne besede

time resolved spectroscopies;topological insulators;interfaces;

Podatki

Jezik:	Angleški jezik
Leto izida:	2021
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UNG - Univerza v Novi Gorici
UDK:	53
COBISS:	89128195
ISSN:	2469-9969
Št. ogledov:	1123
Št. prenosov:	20
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

URN:	URN:SI:UNG
Vrsta dela (COBISS):	Delo ni kategorizirano
Strani:	str. 245110-1-245110-12
Letnik:	ǂVol. ǂ104
Zvezek:	ǂiss. ǂ24
Čas izdaje:	2021
DOI:	10.1103/PhysRevB.104.245110
ID:	13943722