https://doi.org/10.1140/epjd/e2013-30536-5
Regular Article
Shubnikov de Haas quantum oscillation of the surface states in the metallic Bismuth Telluride sheets*
National Laboratory of Solid State Microstructures,
Nanjing University, Nanjing
210093, P.R.
China
a
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Received:
28
August
2012
Received in final form:
25
December
2012
Published online:
30
April
2013
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.
ISSPIC 16 – 16th International Symposium on Small Particles and Inorganic Clusters, edited by Kristiaan Temst, Margriet J. Van Bael, Ewald Janssens, H.-G. Boyen and Françoise Remacle.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2013
