Strong spin-orbit interaction and magnetotransport in semiconductor Bi2O2Se nanoplates

doi:10.1039/c7nr08874d

CORC > 化学研究所 > 中国科学院化学研究所

	Strong spin-orbit interaction and magnetotransport in semiconductor Bi2O2Se nanoplates
	Meng, Mengmeng 1,2; Huang, Shaoyun 1,2; Tan, Congwei 3; Wu, Jinxiong 3; Jing, Yumei 1,2; Peng, Hailin 3; Xu, H. Q.1,2,4
刊名	NANOSCALE
	2018-02-14
卷号	10 期号:6 页码:2704-2710
ISSN号	2040-3364
DOI	10.1039/c7nr08874d
英文摘要	Semiconductor Bi2O2Se nanolayers of high crystal quality have been realized via epitaxial growth. These two-dimensional (2D) materials possess excellent electron transport properties with potential application in nanoelectronics. It is also strongly expected that the 2D Bi2O2Se nanolayers can be an excellent material platform for developing spintronic and topological quantum devices if the presence of strong spin-orbit interaction in the 2D materials can be experimentally demonstrated. Herein, we report the experimental determination of the strength of spin-orbit interactions in Bi2O2Se nanoplates through magnetotransport measurements. The nanoplates are epitaxially grown by chemical vapor deposition, and the magnetotransport measurements are performed at low temperatures. The measured magnetoconductance exhibits a crossover behavior from weak antilocalization to weak localization at low magnetic fields with increasing temperature or decreasing back gate voltage. We have analyzed this transition behavior of magnetoconductance based on an interference theory, which describes quantum correction to the magnetoconductance of a 2D system in the presence of spin-orbit interaction. Dephasing length and spin relaxation length are extracted from the magnetoconductance measurements. Compared to the case of other semiconductor nanostructures, the extracted relatively short spin relaxation length of similar to 150 nm indicates the existence of a strong spin-orbit interaction in Bi2O2Se nanolayers.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000424694400003
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45571]
专题	中国科学院化学研究所
通讯作者	Huang, Shaoyun; Peng, Hailin; Xu, H. Q.
作者单位	1.Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing Key Lab Quantum Devices, Beijing 100871, Peoples R China 2.Peking Univ, Dept Elect, Beijing 100871, Peoples R China 3.Peking Univ, Coll Chem & Mol Engn, BNLMS, Ctr Nanochem, Beijing 100871, Peoples R China 4.Lund Univ, Div Solid State Phys, Box 118, S-22100 Lund, Sweden
推荐引用方式 GB/T 7714	Meng, Mengmeng,Huang, Shaoyun,Tan, Congwei,et al. Strong spin-orbit interaction and magnetotransport in semiconductor Bi2O2Se nanoplates[J]. NANOSCALE,2018,10(6):2704-2710.
APA	Meng, Mengmeng.,Huang, Shaoyun.,Tan, Congwei.,Wu, Jinxiong.,Jing, Yumei.,...&Xu, H. Q..(2018).Strong spin-orbit interaction and magnetotransport in semiconductor Bi2O2Se nanoplates.NANOSCALE,10(6),2704-2710.
MLA	Meng, Mengmeng,et al."Strong spin-orbit interaction and magnetotransport in semiconductor Bi2O2Se nanoplates".NANOSCALE 10.6(2018):2704-2710.