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Low-Frequency Noise in “Graphene-Like” Exfoliated Thin Films of Topological Insulators

Published online by Cambridge University Press:  30 August 2011

M. Z. Hossain ,
S. L. Rumyantsev ,
K. M. F. Shahil ,
D. Teweldebrhan ,
M. Shur  and
A. A. Balandin
M. Z. Hossain
Affiliation:
Nano-Device Laboratory, Department of Electrical Engineering and Materials Science and Engineering Program, University of California, Riverside, California 92521 USA
S. L. Rumyantsev
Affiliation:
Department of Electrical, Computer and Systems Engineering and Center for Integrated Electronics, Rensselaer Polytechnic Institute, Troy, New York 12180 USA Ioffe Institute, Russian Academy of Sciences, St. Petersburg, 194021 Russia
K. M. F. Shahil
Affiliation:
Nano-Device Laboratory, Department of Electrical Engineering and Materials Science and Engineering Program, University of California, Riverside, California 92521 USA
D. Teweldebrhan
Affiliation:
Nano-Device Laboratory, Department of Electrical Engineering and Materials Science and Engineering Program, University of California, Riverside, California 92521 USA
M. Shur
Affiliation:
Department of Electrical, Computer and Systems Engineering and Center for Integrated Electronics, Rensselaer Polytechnic Institute, Troy, New York 12180 USA
A. A. Balandin*
Affiliation:
Nano-Device Laboratory, Department of Electrical Engineering and Materials Science and Engineering Program, University of California, Riverside, California 92521 USA
*
*Corresponding author: [email protected]
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Abstract

We report results of the study of the low-frequency noise in thin films of bismuth selenide topological insulators, which were mechanically exfoliated from bulk crystals via “graphene-like” procedures. From the resistance dependence on the film thickness, it was established that the surface conduction contributions to electron transport were dominant. It was found that the current fluctuations have the noise spectral density SI ∞ 1/f (where f is the frequency) for the frequency range up to 10 kHz. The obtained noise data are important for transport experiments with topological insulators and for any proposed device applications of these materials.

Keywords

deviceselectrical propertiesthin film
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1344: Symposium Y – Functional Two-Dimensional Layered Materials—From Graphene to Topological Insulators , 2011 , mrss11-1344-y03-07
Copyright
Copyright © Materials Research Society 2011

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References

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