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나노물질 및 화학반응 연구단
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Strain effects on in-plane conductance of the topological insulator Bi2Te3

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Title
Strain effects on in-plane conductance of the topological insulator Bi2Te3
Author(s)
Jin Heui Hwang; Sangku Kwon; Park J.; Jong Hun Kim; Lee J.; Kim J.S.; Lyeo H.-K.; Jeong Young Park
Publication Date
2014-04
Journal
APPLIED PHYSICS LETTERS, v.104, no.16, pp.161613 -
Publisher
AMER INST PHYSICS
Abstract
We investigated the correlation between electrical transport and mechanical stress in a topological insulator, Bi2Te3, using conductive probe atomic force microscopy in an ultrahigh vacuum environment. After directly measuring charge transport on the cleaved Bi2Te 3 surface, we found that the current density varied with applied load. Current mapping revealed a variation of the current on different terraces. The current density increased in the low-pressure regime and then decreased in the high-pressure regime. This variation of current density was explained in light of the combined effect of changes in the in-plane conductance due to spin-orbit coupling and hexagonal warping. © 2014 AIP Publishing LLC.
URI
http://pr.ibs.re.kr/handle/8788114/1080
DOI
10.1063/1.4873389
ISSN
0003-6951
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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