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

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dc.citation.firstpage125422en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber89en_US
dc.contributor.authorGhosh, S.en_US
dc.contributor.authorNajmaei, S.en_US
dc.contributor.authorKar, S.en_US
dc.contributor.authorVajtai, R.en_US
dc.contributor.authorLou, J.en_US
dc.contributor.authorPradhan, N.R.en_US
dc.contributor.authorBalicas, L.en_US
dc.contributor.authorAjayan, P.M.en_US
dc.contributor.authorTalapatra, S.en_US
dc.date.accessioned2014-04-14T20:56:35Zen_US
dc.date.available2014-04-14T20:56:35Zen_US
dc.date.issued2014en_US
dc.description.abstractHere, 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.en_US
dc.identifier.citationGhosh, S., Najmaei, S., Kar, S., et al.. "Universal ac conduction in large area atomic layers of CVD-grown MoS2." <i>Physical Review B,</i> 89, (2014) American Physical Society: 125422. http://dx.doi.org/10.1103/PhysRevB.89.125422.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.89.125422en_US
dc.identifier.urihttps://hdl.handle.net/1911/75895en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle 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.en_US
dc.titleUniversal ac conduction in large area atomic layers of CVD-grown MoS2en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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