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    Universal ac conduction in large area atomic layers of CVD-grown MoS2

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    Author
    Ghosh, S.; Najmaei, S.; Kar, S.; Vajtai, R.; Lou, J.; More... Pradhan, N.R.; Balicas, L.; Ajayan, P.M.; Talapatra, S. Less...
    Date
    2014
    Abstract
    Here, we report on the ac conductivity [σ’(ω); 10 mHz < ω < 0.1 MHz] measurements performed on atomically thin, two-dimensional layers of MoS2 grown by chemical vapor deposition (CVD). Σ’(ω) is observed to display a “universal” power law, i.e., σ’(ω) ∼ ωs measured within a broad range of temperatures, 10 K< T <340 K. The temperature dependence of ‘‘s” indicates that the dominant ac transport conduction mechanism in CVD-grown MoS2 is due to electron hopping through a quantum mechanical tunneling process. The ac conductivity also displays scaling behavior, which leads to the collapse of the ac conductivity curves obtained at various temperatures into a single master curve. These findings establish a basis for our understanding of the transport mechanism in atomically thin, CVD-grown MoS2 layers.
    Citation
    Ghosh, S., Najmaei, S., Kar, S., et al.. "Universal ac conduction in large area atomic layers of CVD-grown MoS2." Physical Review B, 89, (2014) American Physical Society: 125422. http://dx.doi.org/10.1103/PhysRevB.89.125422.
    Published Version
    http://dx.doi.org/10.1103/PhysRevB.89.125422
    Type
    Journal article
    Publisher
    American Physical Society
    Citable link to this page
    https://hdl.handle.net/1911/75895
    Rights
    Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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    • Faculty Publications [5245]
    • Mechanical Engineering Publications [162]

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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map