Robustness of topological states in Bi2Se3 thin film grown by Pulsed Laser Deposition on (001)-oriented SrTiO3 perovskite

被引：15

作者：

Bigi, C. ^{[1
,2
]}

Orgiani, P. ^{[2
,3
]}

Nardi, A. ^{[1
,2
]}

Troglia, A. ^{[1
,2
]}

Fujii, J. ^{[2
]}

Panaccione, G. ^{[2
]}

Vobornik, I. ^{[2
]}

Rossi, G. ^{[1
,2
]}

机构：

[1] Univ Milan, Dept Phys, I-20133 Milan, Italy

[2] CNR, IOM, TASC Lab Area Sci Pk, I-34139 Trieste, Italy

[3] CNR, SPIN, UOS Salerno, I-84084 Fisciano, Italy

来源：

APPLIED SURFACE SCIENCE | 2019年 / 473卷

关键词：

Topological insulators; ARPES; Thin films; PLD; Surface states; SINGLE DIRAC CONE; INSULATOR; TEXTURE;

D O I：

10.1016/j.apsusc.2018.12.119

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on the reproducible surface topological electron states in Bi2Se3 topological insulator thin films when epitaxially grown by Pulsed Laser Deposition (PLD) on (001)-oriented SrTiO3 (STO) perovskite substrates. Bi2Se3 has been reproducibly grown with single (001)-orientation and low surface roughness as controlled by ex-situ X-ray diffraction and in situ scanning tunnel microscopy and low-energy electron diffraction. Finally, in situ synchrotron radiation angle-resolved photo-emission spectroscopy measurements show a single Dirac cone and Dirac point at E-B similar to 0.38 eV located in the center of the Brillouin zone likewise found from exfoliated singlecrystals. These results demonstrate that the topological surface electron properties of PLD-grown Bi2Se3 thin films grown on (001)-oriented STO substrates open new perspectives for applications of multi-layered materials based on oxide perovskites.

引用

页码：190 / 193

页数：4

共 39 条

[1] Very efficient spin polarization analysis (VESPA): new exchange scattering-based setup for spin-resolved ARPES at APE-NFFA beamline at Elettra [J].

Bigi, Chiara ;

Das, Pranab K. ;

Benedetti, Davide ;

Salvador, Federico ;

Krizmancic, Damjan ;

Sergo, Rudi ;

Martin, Andrea ;

Panaccione, Giancarlo ;

Rossi, Giorgio ;

Fujii, Jun ;

Vobornik, Ivana .

JOURNAL OF SYNCHROTRON RADIATION, 2017, 24 :750-756

[2] Dependence of the critical temperature in overdoped copper oxides on superfluid density [J].

Bozovic, I. ;

He, X. ;

Wu, J. ;

Bollinger, A. T. .

NATURE, 2016, 536 (7616) :309-+

[3] In-plane electronic anisotropy in underdoped Ba(Fe1-xCox)2As2 revealed by partial detwinning in a magnetic field [J].

Chu, Jiun-Haw ;

Analytis, James G. ;

Press, David ;

De Greve, Kristiaan ;

Ladd, Thaddeus D. ;

Yamamoto, Yoshihisa ;

Fisher, Ian R. .

PHYSICAL REVIEW B, 2010, 81 (21)

[4]

del Rio M. S., 2011, SPIE P, V8141

[5] Magnetically Hard Fe3Se4 Embedded in Bi2Se3 Topological Insulator Thin Films Grown by Molecular Beam Epitaxy [J].

do Nascimento Vasconcelos, Hugo Menezes ;

Eddrief, Mahmoud ;

Zheng, Yunlin ;

Demaille, Dominique ;

Hidki, Sarah ;

Fonda, Emiliano ;

Novikova, Anastasiia ;

Fujii, Jun ;

Torelli, Piero ;

Salles, Benjamin Rache ;

Vobornik, Ivana ;

Panaccione, Giancarlo ;

Aparecido de Oliveira, Adilson Jesus ;

Marangolo, Massimiliano ;

Vidal, Franck .

ACS NANO, 2016, 10 (01) :1132-1138

[6] Topological insulators in three dimensions [J].

Fu, Liang ;

Kane, C. L. ;

Mele, E. J. .

PHYSICAL REVIEW LETTERS, 2007, 98 (10)

[7] Epitaxial growth of the first five members of the Srn+1TinO3n+1 Ruddlesden-Popper homologous series [J].

Haeni, JH ;

Theis, CD ;

Schlom, DG ;

Tian, W ;

Pan, XQ ;

Chang, H ;

Takeuchi, I ;

Xiang, XD .

APPLIED PHYSICS LETTERS, 2001, 78 (21) :3292-3294

[8] A tunable topological insulator in the spin helical Dirac transport regime [J].

Hsieh, D. ;

Xia, Y. ;

Qian, D. ;

Wray, L. ;

Dil, J. H. ;

Meier, F. ;

Osterwalder, J. ;

Patthey, L. ;

Checkelsky, J. G. ;

Ong, N. P. ;

Fedorov, A. V. ;

Lin, H. ;

Bansil, A. ;

Grauer, D. ;

Hor, Y. S. ;

Cava, R. J. ;

Hasan, M. Z. .

NATURE, 2009, 460 (7259) :1101-1105

[9]

Hwang HY, 2012, NAT MATER, V11, P103, DOI [10.1038/nmat3223, 10.1038/NMAT3223]

[10]

Jozwiak C., 2013, NAT PHYS, P9

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