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“Graphene-Like” Exfoliation of Quasi-2D Crystals of Titanium Ditelluride: A New Route to Charge Density Wave Materials

Published online by Cambridge University Press:  30 August 2011

Javed M. Khan ,
Desalegne Teweldebrhan ,
Craig M. Nolen  and
Alexander. A. Balandin
Javed M. Khan
Affiliation:
Nano-Device Laboratory, Department of Electrical Engineering and Material Science and Engineering Program, Bourns College of Engineering, University of California – Riverside, California 92521, USA
Desalegne Teweldebrhan
Affiliation:
Nano-Device Laboratory, Department of Electrical Engineering and Material Science and Engineering Program, Bourns College of Engineering, University of California – Riverside, California 92521, USA
Craig M. Nolen
Affiliation:
Nano-Device Laboratory, Department of Electrical Engineering and Material Science and Engineering Program, Bourns College of Engineering, University of California – Riverside, California 92521, USA
Alexander. A. Balandin
Affiliation:
Nano-Device Laboratory, Department of Electrical Engineering and Material Science and Engineering Program, Bourns College of Engineering, University of California – Riverside, California 92521, USA
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Abstract

We used a “graphene-like” mechanical exfoliation to obtain atomically thin films of TiTe2. The building blocks of titanium ditelluride are atomic tri-layers separated by the van der Waals gaps. The exfoliation procedure allows one to obtain the few-atom-thick films with strong confinement of charge carriers and phonons. We have verified the crystallinity of the exfoliated films and fabricated the back-gated field-effect devices. The current – voltage characteristics of the TiTe2 devices revealed strong non-linearity, which suggests the charge-density wave effects. The obtained results are important for the proposed application of TiTe2 for the charge-density wave devices and thermoelectric energy conversion.

Keywords

thin filmcrystallinelayered
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-y10-13
Copyright
Copyright © Materials Research Society 2011

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References

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