Magnetotransport in type-enriched single-wall carbon nanotube networks

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dc.citation.articleNumber116001
dc.citation.issueNumber11
dc.citation.journalTitlePhysical Review Materials
dc.citation.volumeNumber2
dc.contributor.authorWang, X.
dc.contributor.authorGao, W.
dc.contributor.authorLi, X.
dc.contributor.authorZhang, Q.
dc.contributor.authorNanot, S.
dc.contributor.authorHároz, E.H.
dc.contributor.authorKono, J.
dc.contributor.authorRice, W.D.
dc.date.accessioned2019-01-08T15:37:43Z
dc.date.available2019-01-08T15:37:43Z
dc.date.issued2018
dc.description.abstractSingle-wall carbon nanotubes (SWCNTs) exhibit a wide range of physical phenomena depending on their chirality. Nanotube networks typically contain a broad mixture of chiralities, which prevents an in-depth understanding of SWCNT ensemble properties. In particular, electronic-type mixing (the simultaneous presence of semiconductor and metallic nanotubes) in SWCNT networks remains the single largest hurdle to developing a comprehensive view of ensemble nanotube electrical transport, a critical step toward their use in optoelectronics. Here, we systematically study temperature-dependent magnetoconductivity (MC) in networks of highly enriched semiconductor and metal SWCNT films. In the semiconductor-enriched network, we observe two-dimensional variable-range hopping conduction from 5 to 290 K. Low-temperature MC measurements reveal a large, negative MC from which we determine the wave-function localization length and Fermi energy density of states. In contrast, the metal-enriched film exhibits positive MC that increases with decreasing temperature, a behavior attributed to two-dimensional weak localization. Using this model, we determine the details of the carrier phase coherence and fit the temperature-dependent conductivity. These extensive measurements on type-enriched SWCNT networks provide insights that pave the way for the use of SWCNTs in solid-state devices.
dc.identifier.citationWang, X., Gao, W., Li, X., et al.. "Magnetotransport in type-enriched single-wall carbon nanotube networks." <i>Physical Review Materials,</i> 2, no. 11 (2018) American Physical Society: https://doi.org/10.1103/PhysRevMaterials.2.116001.
dc.identifier.digitalPhysRevMaterials.2.116001
dc.identifier.doihttps://doi.org/10.1103/PhysRevMaterials.2.116001
dc.identifier.urihttps://hdl.handle.net/1911/104976
dc.language.isoeng
dc.publisherAmerican Physical Society
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.
dc.titleMagnetotransport in type-enriched single-wall carbon nanotube networks
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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