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https://hdl.handle.net/1822/91181
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Campo DC | Valor | Idioma |
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dc.contributor.author | Gomes, José Nuno Santos | por |
dc.contributor.author | Trallero-Giner, Carlos | por |
dc.contributor.author | Vasilevskiy, Mikhail | por |
dc.date.accessioned | 2024-04-22T12:33:07Z | - |
dc.date.available | 2024-04-22T12:33:07Z | - |
dc.date.issued | 2021 | - |
dc.identifier.issn | 1361-648X | - |
dc.identifier.uri | https://hdl.handle.net/1822/91181 | - |
dc.description.abstract | Several transition metal dichalcogenides (TMDs) can be exfoliated to produce nearly two-dimensional (2D) semiconductor layers supporting robust excitons with non-hydrogenic Rydberg series of states. Black phosphorus (BP) can also be layered to create a nearly 2D material with interesting properties including its pronounced in-plane anisotropy that influences, in particular, exciton states making them different from those in other 2D semiconductors. We apply the Rayleigh-Ritz variational method to evaluate the energies and approximate the wavefunctions of the ground and lowest excited states of the exciton in a 2D semiconductor with anisotropic effective masses of electrons and holes. The electron-hole interaction is described by the Rytova-Keldysh potential, which is considered beyond the standard zero-thickness approximation. The exciton binding energies calculated for BP and TMD (molybdenum disulphide and tungsten disulphide) monolayers are compared with previously published data. | por |
dc.description.sponsorship | Funding from the European Commission, within the project ‘Graphene-Driven Revolutions in ICT and Beyond’ (Ref. No.696656), and from the Portuguese Foundation for Science and Technology (FCT) in the framework of the PTDC/NAN-OPT/29265/2017 ‘Towards high speed optical devices by exploiting the unique electronic properties of engineered 2D materials’ project the Strategic Funding UID/FIS/04650/2019 is gratefully acknowledged. We also wish to thank Nuno Peres for helpful discussions. | por |
dc.language.iso | eng | por |
dc.publisher | IOP Publishing | por |
dc.relation | info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FNAN-OPT%2F29265%2F2017/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FFIS%2F04650%2F2019/PT | por |
dc.rights | openAccess | por |
dc.subject | Exciton | por |
dc.subject | Phosphorene | por |
dc.subject | Transition-metal dichalcogenide | por |
dc.subject | Few-layer material | por |
dc.title | Variational calculation of the lowest exciton states in phosphorene and transition metal dichalcogenides | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://doi.org/10.1088/1361-648x/ac1765 | por |
oaire.citationIssue | 4 | por |
oaire.citationVolume | 34 | por |
dc.identifier.doi | 10.1088/1361-648X/ac1765 | por |
dc.identifier.pmid | 34298536 | por |
dc.subject.fos | Ciências Naturais::Ciências Físicas | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of Physics: Condensed Matter | por |
oaire.version | VoR | por |
dc.identifier.articlenumber | 045702 | por |
Aparece nas coleções: | PHYSICS OF QUANTUM MATERIALS AND BIONANOSTRUCTURES (2018 - ...) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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jpcm_34_4_045702_2021_Variational method for exciton in phosphorene.pdf | published | 1,4 MB | Adobe PDF | Ver/Abrir |