Abstract:
:The carrier transport characteristics of Sb2Se2Te topological insulators were investigated, after exposure to different levels of nitrogen gas. The magnetoresistance (MR) slope for the Sb2Se2Te crystal increased by approximately 100% at 10 K after 2-days of exposure. The Shubnikov-de Haas (SdH) oscillation amplitude increased by 30% while oscillation frequencies remained the same. MR slopes and the mobilities had the same dependency on temperature over a wide temperature range. All measured data conformed to a linear correlation between MR slope and mobility, supporting our hypothesis that the MR increase and the SdH oscillation enhancement might be caused by mobility enhancement induced by adsorbed N2 molecular.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Huang SM,Huang SJ,Hsu C,Wadekar PV,Yan YJ,Yu SH,Chou Mdoi
10.1038/s41598-017-05369-ysubject
Has Abstractpub_date
2017-07-11 00:00:00pages
5133issue
1issn
2045-2322pii
10.1038/s41598-017-05369-yjournal_volume
7pub_type
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