Enhancement of carrier transport characteristic in the Sb2Se2Te topological insulators by N2 adsorption.

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 Rep

journal_title

Scientific reports

authors

Huang SM,Huang SJ,Hsu C,Wadekar PV,Yan YJ,Yu SH,Chou M

doi

10.1038/s41598-017-05369-y

subject

Has Abstract

pub_date

2017-07-11 00:00:00

pages

5133

issue

1

issn

2045-2322

pii

10.1038/s41598-017-05369-y

journal_volume

7

pub_type

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