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Enhanced surface mo...
Enhanced surface mobility and quantum oscillations in topological insulator Bi1.5Sb0.5Te1.7Se1.3 nanoflakes
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- Hsiung, Te-Chih (författare)
- Academia Sinica Taiwan
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- Ding Yuan, Chen, 1991 (författare)
- Academia Sinica Taiwan
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- Zhao, Li (författare)
- Academia Sinica Taiwan
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visa fler...
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- Lin, Yi-Hsin (författare)
- Academia Sinica Taiwan
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- Mou, Chung-Yu (författare)
- National Tsing Hua University
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- Lee, Ting-Kuo (författare)
- Academia Sinica Taiwan
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- Wu, Maw-Kuen (författare)
- Academia Sinica Taiwan
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- Chen, Yang-Yuan (författare)
- Academia Sinica Taiwan
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(creator_code:org_t)
- AIP Publishing, 2013
- 2013
- Engelska.
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Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 103:16
- Relaterad länk:
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- 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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