WFRF:(Wu Yuan Chih)
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- Hsiung, Te-ChihAcademia Sinica Taiwan (author)
Enhanced surface mobility and quantum oscillations in topological insulator Bi1.5Sb0.5Te1.7Se1.3 nanoflakes
- Article/chapterEnglish2013
Publisher, publication year, extent ...
- AIP Publishing,2013
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- LIBRIS-ID:oai:research.chalmers.se:233d7fcd-d01e-495c-ae19-f4ba2555f3a9
- https://doi.org/10.1063/1.4826092DOI
- https://research.chalmers.se/publication/524037URI
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- Language:English
- Summary in:English
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- SwePubSwePub
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- n this study, a series of Bi1.5Sb0.5Te 1.7Se1.3 (BSTS) flakes 80-nm to 140-μm in thickness was fabricated to investigate their metallic surface states. We report the observation of surface-dominated transport in these topological insulator BSTS nanoflakes. The achievement of surface-dominated transport can be attributed to high surface mobility (∼3000 cm2/V s) and low bulk mobility (12 cm2/V s). Up to 90% of the total conductance, the surface channel was estimated based on the thickness dependence of electrical conductance and the result of the Shubnikov-de Hass oscillations in a 200-nm BSTS. The nature of nontrivial Dirac surface states was also confirmed by the weak anti-localization effect.
Subject headings and genre
- NATURVETENSKAP Fysik Atom- och molekylfysik och optik hsv//swe
- NATURAL SCIENCES Physical Sciences Atom and Molecular Physics and Optics hsv//eng
- NATURVETENSKAP Fysik Annan fysik hsv//swe
- NATURAL SCIENCES Physical Sciences Other Physics Topics hsv//eng
- NATURVETENSKAP Fysik Den kondenserade materiens fysik hsv//swe
- NATURAL SCIENCES Physical Sciences Condensed Matter Physics hsv//eng
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- Ding Yuan, Chen,1991Academia Sinica Taiwan(Swepub:cth)chend (author)
- Zhao, LiAcademia Sinica Taiwan (author)
- Lin, Yi-HsinAcademia Sinica Taiwan (author)
- Mou, Chung-YuNational Tsing Hua University (author)
- Lee, Ting-KuoAcademia Sinica Taiwan (author)
- Wu, Maw-KuenAcademia Sinica Taiwan (author)
- Chen, Yang-YuanAcademia Sinica Taiwan (author)
- Academia Sinica TaiwanNational Tsing Hua University (creator_code:org_t)
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- In:Applied Physics Letters: AIP Publishing103:160003-69511077-3118
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