Quantum electrical transport properties of topological insulator Bi2Te3 nanowires
- Authors
- Kim, Hong-Seok; Shin, Ho Sun; Lee, Joon Sung; Ahn, Chi Won; Song, Jae Yong; Doh, Yong-Joo
- Issue Date
- 1월-2016
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Topological insulators; Quantum interference; Weak antilocalizatioin; Aharonov-Bohm oscillations; Topological surface state
- Citation
- CURRENT APPLIED PHYSICS, v.16, no.1, pp.51 - 56
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 16
- Number
- 1
- Start Page
- 51
- End Page
- 56
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/90042
- DOI
- 10.1016/j.cap.2015.10.011
- ISSN
- 1567-1739
- Abstract
- We investigate the quantum transport properties of surface electrons on a topological insulator Bi2Te3 nanowire in a magnetotransport study. Although the nanowires are synthesized by using a relatively coarse method of electrochemical deposition, clear Aharonov-Bohm oscillations of phases 0 and pi are observed, owing to the highly coherent surface electron channel. The oscillation amplitude exhibits exponential temperature dependence, suggesting that the phase coherence length L phi is inversely proportional to the temperature, as in quasi-ballistic systems. In addition, a weak antilocalization analysis on the surface channel by using a one-dimensional localization theory, enabled by successful extraction of the surface contribution from the magnetoconductance data, is provided in support of the temperature dependence of L phi. (C) 2015 Elsevier B.V. All rights reserved.
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Collections - College of Science and Technology > Semiconductor Physics in Division of Display and Semiconductor Physics > 1. Journal Articles
- Graduate School > Department of Applied Physics > 1. Journal Articles
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