Monolayer transition metal dichalcogenides in strong magnetic fields:Validating the Wannier model using a microscopic calculation
| Autor: | Gonçalo Catarina, Nuno M. R. Peres, Thomas Garm Pedersen, Jonas Have |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Ciências Naturais::Ciências Físicas
Exciton Ciências Físicas [Ciências Naturais] FOS: Physical sciences 02 engineering and technology Dielectric 01 natural sciences 7. Clean energy Condensed Matter::Materials Science Transition metal Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Monolayer 010306 general physics Physics Condensed Matter::Quantum Gases Condensed Matter - Materials Science Science & Technology Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Condensed Matter::Other Materials Science (cond-mat.mtrl-sci) Equations of motion 021001 nanoscience & nanotechnology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 3. Good health Magnetic field 0210 nano-technology |
| Zdroj: | Have, J, Catarina, G, Pedersen, T G & Peres, N M R 2019, ' Monolayer transition metal dichalcogenides in strong magnetic fields : Validating the Wannier model using a microscopic calculation ', Physical Review B, vol. 99, no. 3, 035416 . https://doi.org/10.1103/PhysRevB.99.035416 Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Physical Review B |
| DOI: | 10.1103/PhysRevB.99.035416 |
| Popis: | Using an equation of motion (EOM) approach, we calculate excitonic properties of monolayer transition metal dichalcogenides (TMDs) perturbed by an external magnetic field. We compare our findings to the widely used Wannier model for excitons in two-dimensional materials and to recent experimental results. We find good agreement between the calculated excitonic transition energies and the experimental results. In addition, we find that the exciton energies calculated using the EOM approach are slightly lower than the ones calculated using the Wannier model. Finally, we also show that the effect of the dielectric environment on the magnetoexciton transition energy is minimal due to counteracting changes in the exciton energy and the exchange self-energy correction. J.H. and T.G.P. gratefully acknowledge financial support by the QUSCOPE Center, sponsored by the Villum Foundation. Additionally, T.G.P. is supported by the Center for Nanostructured Graphene (CNG), which is sponsored by the Danish National Research Foundation, Project No. DNRF103. G.C. acknowledges financial support from FCT for the P2020-PTDC/FIS-NAN/4662/2014 project. N.M.R.P. acknowledges support from the European Commission through the project "Graphene-Driven Revolutions in ICT and Beyond" (Ref. No. 785219), and the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Financing UID/FIS/04650/2013. Additionally, N.M.R.P. acknowledges COMPETE2020, PORTUGAL2020, FEDER, and the Portuguese Foundation for Science and Technology (FCT) through Project No. PTDC/FIS-NAN/3668/201. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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