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Title:Electronic properties of phases in the quasi-binary Bi[sub]2Se[sub]3-Bi[sub]2S[sub]3 system
Authors:Benher, Zipporah Rini (Author)
Gardonio, Sandra (Author)
Fanetti, Mattia (Author)
Moras, Paolo (Author)
Kundu, Asish K. (Author)
Bigi, Chiara (Author)
Valant, Matjaž (Author)
Files:This document has no files. This document may have a phisical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Unknown ()
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:We explored the properties of the quasi-binary Bi2Se3–Bi2S3 system over a wide compositional range. X-ray diffraction analysis demonstrates that rhombohedral crystals can be synthesized within the solid solution interval 0–22 mol% Bi2S3, while at 33 mol% Bi2S3 only orthorhombic crystals are obtained. Core level photoemission spectroscopy reveals the presence of Bi3+, Se2− and S2− species and the absence of metallic species, thus indicating that S incorporation into Bi2Se3 proceeds prevalently through the substitution of Se with S. Spin- and angle-resolved photoemission spectroscopy shows that topological surface states develop on the surfaces of the Bi2Se3−ySy (y ≤0.66) rhombohedral crystals, in close analogy with the prototypical case of Bi2Se3, while the orthorhombic crystals with higher S content turn out to be trivial semiconductors. Our results connect unambiguously the phase diagram and electronic properties of the Bi2Se3–Bi2S3 system.
Keywords:topological insulator, quasi-binary Bi2Se3-Bi2S3 system, electronic properties
Year of publishing:2021
Number of pages:str. 3058-3064
Numbering:no. 9, Vol. 9
COBISS_ID:57602051 Link is opened in a new window
UDC:620.1/.2
ISSN on article:2050-7526
URN:URN:SI:UNG:REP:FDPEOGBO
DOI:10.1039/D0TC05121G Link is opened in a new window
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Record is a part of a journal

Title:Journal of materials chemistry
Shortened title:J. mater. chem. C
Publisher:RSC Publications
ISSN:2050-7526
COBISS.SI-ID:16529430 New window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Funding Programme:Cilnji raziskovalni programi
Project no.:P2-0412
Name:Heterogeni procesi na površinah trdnin za trajnostne tehnologije
Acronym:
Project ID:info:eu-repo/grantAgreement/ARRS/Cilnji%20raziskovalni%20programi/P2-0412

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