Detection of Spin Polarized Band in VO2/TiO2(001) Strained Films via Orbital Selective Constant Initial State Spectroscopy

被引：5

作者：

D'Elia, Alessandro ^{[1
,2
]}

Grazioli, Cesare ^{[1
]}

Cossaro, Albano ^{[1
,3
]}

Li, Bowen ^{[4
]}

Zou, Chongwen ^{[4
]}

Rezvani, Seyed Javad ^{[1
,5
]}

Marcelli, Augusto ^{[6
,7
,8
]}

Coreno, Marcello ^{[8
]}

机构：

[1] CNR, IOM, Lab TASC, Basovizza SS-14,Km 163-5, I-34149 Trieste, Italy

[2] Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany

[3] Univ Trieste, Dept Chem & Pharmaceut Sci, Via L Giorgieri 1, I-34149 Trieste, Italy

[4] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China

[5] Univ Camerino, Sez Fis, Scuola Sci & Tecnol, Via Madonna Carceri 9, I-62032 Camerino, Italy

[6] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[7] Rome Int Ctr Mat Sci Superstripes, RICMASS, Via Sabelli 119A, I-00185 Rome, Italy

[8] CNR, ISM, Ist Struttura Mat, LD2 Unit,Basovizza Area Sci Pk, I-34149 Trieste, Italy

来源：

CONDENSED MATTER | 2020年 / 5卷 / 04期

关键词：

strain; spin polarization; VO2; orbital selective; constant initial state; resonant photoemission; band structure; metal-insulator transition; METAL-INSULATOR-TRANSITION; ELECTRONIC-STRUCTURE; VO2; PHOTOELECTRON; PHOTOEMISSION; OXIDES;

D O I：

10.3390/condmat5040072

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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.

引用

页码：1 / 14

页数：14

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