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 T. 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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Chen, T., Han, J., Li, Z. et al. Shubnikov de Haas quantum oscillation of the surface states in the metallic Bismuth Telluride sheets. Eur. Phys. J. D 67, 75 (2013). https://doi.org/10.1140/epjd/e2013-30536-5
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DOI: https://doi.org/10.1140/epjd/e2013-30536-5