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arXiv · 1305.3747

Shubnikov de Haas quantum oscillation of the surface states in the metallic Bismuth Telluride sheets

Taishi Chen·Junhao Han·Zhaoguo Li·Fengqi Song·Bo Zhao·Xuefeng Wang·Baigeng Wang·Jianguo Wan·Min Han·Rong Zhang·Guanghou Wang
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Abstract

Metallic Bi2Te3 crystalline sheets with the room-temperature resistivity of above 10 mΩ cm were prepared and their magnetoresistive transport was measured in a field of up to 9 Tesla. The Shubnikov de Haas oscillations were identified from the secondly-derived magnetoresistance curves. While changing the angle between the field and normal axis of the sheets, we find that the oscillation periods present a cosine dependence on the angle. This indicates a two-dimensional transport due to the surface state. The work reveals a resolvable surface contribution to the overall conduction even in a metallic topological insulator.

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Taishi Chen, Junhao Han, Zhaoguo Li, Fengqi Song, Bo Zhao, Xuefeng Wang, Baigeng Wang, Jianguo Wan, Min Han, Rong Zhang, Guanghou Wang. 2013-05-16. Shubnikov de Haas quantum oscillation of the surface states in the metallic Bismuth Telluride sheets. https://doi.org/10.1140/epjd%2Fe2013-30536-5

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