Chemical instability of an interface between silver and Bi[sub]2Se[sub]3 topological insulator at room temperature

Katja Ferfolja (Author), Matjaž Valant (Author), I. Mikulska (Author), Sandra Gardonio (Author), Mattia Fanetti (Author)

Abstract

Understanding an interaction at an interface between a topological insulator and a metal is of critical importance when designing electronic and spintronic devices or when such systems are used in catalysis. In this paper, we report on a chemical instability of the interface between Bi2Se3 and Ag studied by X-ray powder diffraction and electron microscopy. We present strong experimental evidence of a redox solid-state reaction occurring at the interface with kinetics that is significant already at room temperature. The reaction yields Ag2Se, AgBiSe2, and Bi. The unexpected room-temperature chemical instability of the interface should be considered for all future theoretical and applicative studies involving the interface between Bi2Se3 and Ag.

Keywords

topološki izolatorji;Bi2Se3;kovinski stiki;

Data

Language:	English
Year of publishing:	2018
Typology:	1.01 - Original Scientific Article
Organization:	UNG - University of Nova Gorica
UDC:	53
COBISS:	5205243
ISSN:	1932-7447
Views:	2182
Downloads:	0
Average score:	0 (0 votes)
Metadata:

Other data

URN:	URN:SI:UNG
Type (COBISS):	Not categorized
Pages:	str. 9980-9984
Volume:	ǂVol. ǂ122
Issue:	ǂno. ǂ18
Chronology:	2018
DOI:	10.1021/acs.jpcc.8b01543
ID:	11846172