Structural properties of Bi2-xMnxSe3 thin films grown via molecular beam epitaxy

被引：6

作者：

Babakiray, Sercan ^{[1
]}

Johnson, Trent A. ^{[1
]}

Borisov, Pavel ^{[1
]}

Holcomb, Mikel B. ^{[1
]}

Lederman, David ^{[1
]}

Marcus, Matthew A. ^{[2
]}

Tarafder, Kartick ^{[3
]}

机构：

[1] W Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[3] Dept Phys, Secunderabad 500078, Andhra Pradesh, India

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 118卷 / 04期

关键词：

RAY PHOTOELECTRON-SPECTRA; SPECTROSCOPY; REFINEMENT; PARAMETERS; CRYSTAL; BI2SE3;

D O I：

10.1063/1.4927171

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of Mn doping on the structural properties of the topological insulator Bi2Se3 in thin film form were studied in samples grown via molecular beam epitaxy. Extended x-ray absorption fine structure measurements, supported by density functional theory calculations, indicate that preferential incorporation occurs substitutionally in Bi sites across the entire film volume. This finding is consistent with x-ray diffraction measurements which show that the out of plane lattice constant expands while the in plane lattice constant contracts as the Mn concentration is increased. X-ray photoelectron spectroscopy indicates that the Mn valency is 2+ and that the Mn bonding is similar to that in MnSe. The expansion along the out of plane direction is most likely due to weakening of the Van der Waals interactions between adjacent Se planes. Transport measurements are consistent with this Mn 2+ substitution of Bi sites if additional structural defects induced by this substitution are taken into account. (C) 2015 AIP Publishing LLC.

引用

页数：7

共 48 条

[41]

Stranick M. A., 1999, Surface Science Spectra, V6, P39, DOI 10.1116/1.1247889

[42] Molecular beam epitaxy and characterization of thin Bi2Se3 films on Al2O3 (110) [J].

Tabor, Phillip ;

Keenan, Cameron ;

Urazdhin, Sergei ;

Lederman, David .

APPLIED PHYSICS LETTERS, 2011, 99 (01)

[43] X-RAY PHOTOELECTRON-SPECTRA OF 3D TRANSITION-METAL PYRITES [J].

VANDERHEIDE, H ;

HEMMEL, R ;

VANBRUGGEN, CF .

JOURNAL OF SOLID STATE CHEMISTRY, 1980, 33 (01) :17-25

[44] Ferromagnetism in Bi2Se3: Mn epitaxial layers [J].

von Bardeleben, H. J. ;

Cantin, J. L. ;

Zhang, D. M. ;

Richardella, A. ;

Rench, D. W. ;

Samarth, N. ;

Borchers, J. A. .

PHYSICAL REVIEW B, 2013, 88 (07)

[45]

Xu SY, 2012, NAT PHYS, V8, P616, DOI [10.1038/nphys2351, 10.1038/NPHYS2351]

[46] Interplay between ferromagnetism, surface states, and quantum corrections in a magnetically doped topological insulator [J].

Zhang, Duming ;

Richardella, Anthony ;

Rench, David W. ;

Xu, Su-Yang ;

Kandala, Abhinav ;

Flanagan, Thomas C. ;

Beidenkopf, Haim ;

Yeats, Andrew L. ;

Buckley, Bob B. ;

Klimov, Paul V. ;

Awschalom, David D. ;

Yazdani, Ali ;

Schiffer, Peter ;

Hasan, M. Zahid ;

Samarth, Nitin .

PHYSICAL REVIEW B, 2012, 86 (20)

[47] Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surface [J].

Zhang, Haijun ;

Liu, Chao-Xing ;

Qi, Xiao-Liang ;

Dai, Xi ;

Fang, Zhong ;

Zhang, Shou-Cheng .

NATURE PHYSICS, 2009, 5 (06) :438-442

[48] Tailoring Magnetic Doping in the Topological Insulator Bi2Se3 [J].

Zhang, Jian-Min ;

Zhu, Wenguang ;

Zhang, Ying ;

Xiao, Di ;

Yao, Yugui .

PHYSICAL REVIEW LETTERS, 2012, 109 (26)

← 1 2 3 4 5 →