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Quasiparticle description of transition metal dichalcogenide nanoribbons
Univ Brasilia, Brazil.
Univ Brasilia, Brazil.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering. Univ Brasilia, Brazil.ORCID iD: 0000-0001-7468-2946
Univ Brasilia, Brazil.
2019 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 99, no 3, article id 035405Article in journal (Refereed) Published
Abstract [en]

An effective two-dimensional real-space model is developed to investigate the nature of charge distribution in nanoribbons of transition metal dichalcogenides. Our description is based on a lattice relaxation endowed tight-binding Hamiltonian with spin-orbit and Hubbard interactions, which is parameterized to describe molybdenum disulfide lattices. As our main finding, we observed that electron-phonon coupling induces the creation of quasiparticles such as polarons in the same fashion as observed in conducting polymers and graphene nanoribbons. These similarities suggest that the charge transport in transition metal dichalcogenides can also be mediated by quasiparticles, which is a fundamental aspect concerning the application of these structures in electronics. We determine a range of possible electron-phonon coupling that correctly describes the system and also the critical value where quasiparticle transport is present. Our findings may have profound consequences on the understanding of the transport mechanism of transition metal dichalcogenides nanoribbons.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2019. Vol. 99, no 3, article id 035405
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-153960DOI: 10.1103/PhysRevB.99.035405ISI: 000454766400013OAI: oai:DiVA.org:liu-153960DiVA, id: diva2:1281564
Note

Funding Agencies|CNPq; Brazilian Ministry of Planning, Development and Management [005/2016 DIPLA]; FAP-DF [0193.001766/2017, 0193.001511/2017, 0193.001662/2017, 0193.001694/2017]

Available from: 2019-01-22 Created: 2019-01-22 Last updated: 2019-06-27

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • Other style
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  • de-DE
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