Universität zu Köln

D'Elia, Alessandro, Grazioli, Cesare, Cossaro, Albano, Li, Bowen, Zou, Chongwen, Rezvani, Seyed Javad, Marcelli, Augusto and Coreno, Marcello (2020). Detection of Spin Polarized Band in VO2/TiO2(001) Strained Films via Orbital Selective Constant Initial State Spectroscopy. Condens. Matter, 5 (4). BASEL: MDPI. ISSN 2410-3896

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Abstract

The VO2 is a 3d(1) electron system that undergoes a reversible metal-insulator transition (MIT) triggered by temperature and characterized by an interplay between orbital, charge and lattice degrees of freedom. The characterization of the MIT features are therefore extremely challenging and powerful investigation tools are required. In this work, we demonstrate how a combination of resonant photoemission and constant initial state (CIS) spectroscopy can be used as an orbital selective probe of the MIT studying three different VO2/TiO2(001) strained films. The CIS spectra of the V 3d and V 3p photo-electrons shows sensitivity to different orbital contribution and the presence of a spin polarized band close to the Fermi level.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code D'Elia, Alessandro UNSPECIFIED UNSPECIFIED UNSPECIFIED Grazioli, Cesare UNSPECIFIED UNSPECIFIED UNSPECIFIED Cossaro, Albano UNSPECIFIED UNSPECIFIED UNSPECIFIED Li, Bowen UNSPECIFIED UNSPECIFIED UNSPECIFIED Zou, Chongwen UNSPECIFIED UNSPECIFIED UNSPECIFIED Rezvani, Seyed Javad UNSPECIFIED UNSPECIFIED UNSPECIFIED Marcelli, Augusto UNSPECIFIED UNSPECIFIED UNSPECIFIED Coreno, Marcello UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-309746
DOI:	10.3390/condmat5040072
Journal or Publication Title:	Condens. Matter
Volume:	5
Number:	4
Date:	2020
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	2410-3896
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language METAL-INSULATOR-TRANSITION; ELECTRONIC-STRUCTURE; VO2; PHOTOELECTRON; PHOTOEMISSION; OXIDES Multiple languages Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/30974