Surface Band Tuning of Bi2Te3 Topological Insulator Thin Films by Gas Adsorption

被引：7

作者：

Liu, N. ^{[1
,2
,3
]}

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

Cheng, X. M. ^{[1
,2
]}

Miao, X. S. ^{[1
,2
,3
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China

[2] Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[3] Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2014年 / 43卷 / 09期

关键词：

Topological insulator; surface band tuning; gas adsorption; Dirac cone; TRANSPORT; BI2SE3; LIMIT; STATE;

D O I：

10.1007/s11664-014-3271-6

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The surface band tuning of the topological insulator Bi2Te3 by gas adsorption is investigated on the basis of aba initio pound calculations. It is shown that, with the increase of Te vacancies, the topologically non-trivial surface state which originates from the second quintuple layer coexists with the topologically trivial surface. Molecular dynamics simulation reveals that O-2 and NO2 easily occupy the Te vacancy sites and further bind to the Bi atoms from the second atomic layer. Moreover, the surface band with the Dirac cone is observed. Our results suggest that the topological surface state can be effectively regulated by NO2 and O-2 adsorption.

引用

页码：3105 / 3109

页数：5

共 50 条

[41] Gate-Controlled Surface Conduction in Na-Doped Bi2Te3 Topological Insulator Nanoplates
Wang, Yong
Xiu, Faxian
Cheng, Lina
He, Liang
Lang, Murong
Tang, Jianshi
Kou, Xufeng
Yu, Xinxin
Jiang, Xiaowei
Chen, Zhigang
Zou, Jin
Wang, Kang L.
NANO LETTERS, 2012, 12 (03) : 1170 - 1175
[42] Transport properties of Sb2Te3/Bi2Te3 topological insulator heterostructures
Zhang, Zuocheng
Feng, Xiao
Guo, Minghua
Ou, Yunbo
Zhang, Jinsong
Li, Kang
Wang, Lili
Chen, Xi
Xue, Qikun
Ma, Xucun
He, Ke
Wang, Yayu
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2013, 7 (1-2): : 142 - 144
[43] Spatial potential ripples of azimuthal surface modes in topological insulator Bi2Te3 nanowires
Munoz Rojo, Miguel
Zhang, Yingjie
Manzano, Cristina V.
Alvaro, Raquel
Gooth, Johannes
Salmeron, Miquel
Martin-Gonzalez, Marisol
SCIENTIFIC REPORTS, 2016, 6
[44] Separation of top and bottom surface conduction in Bi2Te3 thin films
Yu, Xinxin
He, Liang
Lang, Murong
Jiang, Wanjun
Xiu, Faxian
Liao, Zhiming
Wang, Yong
Kou, Xufeng
Zhang, Peng
Tang, Jianshi
Huang, Guan
Zou, Jin
Wang, Kang L.
NANOTECHNOLOGY, 2013, 24 (01)
[45] Nonlinear Hall effect in topological insulator Bi2Te3 with hexagonal warping
Yar, Abdullah
Jasra, Kashif
JOURNAL OF APPLIED PHYSICS, 2022, 131 (18)
[46] Weak localization bulk state in a topological insulator Bi2Te3 film
Zhang, H. B.
Yu, H. L.
Bao, D. H.
Li, S. W.
Wang, C. X.
Yang, G. W.
PHYSICAL REVIEW B, 2012, 86 (07):
[47] Incipient antiferromagnetism in the Eu-doped topological insulator Bi2Te3
Tcakaev, A.
Zabolotnyy, V. B.
Fornari, C., I
Ruessmann, P.
Peixoto, T. R. F.
Stier, F.
Dettbarn, M.
Kagerer, P.
Weschke, E.
Schierle, E.
Bencok, P.
Rappl, P. H. O.
Abramof, E.
Bentmann, H.
Goering, E.
Reinert, F.
Hinkov, V
PHYSICAL REVIEW B, 2020, 102 (18)
[48] Magnetoresistance oscillations in topological insulator Bi2Te3 nanoscale antidot arrays
Song, Min
Chu, Jiun-Haw
Zhou, Jian
Tongay, Sefaattin
Liu, Kai
Suh, Joonki
Chen, Henry
Kang, Jeong Seuk
Zou, Xuecheng
You, Long
NANOTECHNOLOGY, 2015, 26 (26)
[49] Strain effects on in-plane conductance of the topological insulator Bi2Te3
Hwang, Jin Heui
Kwon, Sangku
Park, Joonbum
Kim, Jong Hun
Lee, Jhinhwan
Kim, Jun Sung
Lyeo, Ho-Ki
Park, Jeong Young
APPLIED PHYSICS LETTERS, 2014, 104 (16)
[50] Evidence for topological surface states in metallic single crystals of Bi2Te3
Barua, Sourabh
Rajeev, K. P.
Gupta, Anjan K.
JOURNAL OF PHYSICS-CONDENSED MATTER, 2015, 27 (01)

← 1 2 3 4 5 →