Tailoring topological states of core-shell nanoparticles
dc.contributor.author | Martínez Strasser, Carolina | |
dc.contributor.author | Baba, Yuriko | |
dc.contributor.author | Díaz Fernández, Álvaro | |
dc.contributor.author | Domínguez-Adame Acosta, Francisco | |
dc.date.accessioned | 2023-06-22T12:26:28Z | |
dc.date.available | 2023-06-22T12:26:28Z | |
dc.date.issued | 2022-02 | |
dc.description | ©2022 Elsevier This work was supported by Ministerio de Ciencia e Innovacion, Spain (Grant PID2019-106820RB-C21). | |
dc.description.abstract | In this work we investigate novel spherical core-shell nanoparticles with band inversion. The core and the embedding medium are normal semiconductors while the shell material is assumed to be a topological insulator. The envelope functions are found to satisfy a Dirac-like equation that can be solved in a closed form. The core-shell nanoparticle supports midgap bound states located at both interfaces due to band inversion. These states are robust since they are topologically protected. The energy spectrum presents mirror symmetry due to the chiral symmetry of the Dirac-like Hamiltonian. As a major result, we show that the thickness of the shell acts as an additional parameter for the fine tuning of the energy levels, which paves the way for electronics and optoelectronics applications. | |
dc.description.department | Depto. de Física de Materiales | |
dc.description.faculty | Fac. de Ciencias Físicas | |
dc.description.refereed | TRUE | |
dc.description.sponsorship | Ministerio de Ciencia e Innovación (MICINN) | |
dc.description.status | pub | |
dc.eprint.id | https://eprints.ucm.es/id/eprint/69270 | |
dc.identifier.doi | 10.1016/j.physe.2021.115000 | |
dc.identifier.issn | 1386-9477 | |
dc.identifier.officialurl | http://dx.doi.org/10.1016/j.physe.2021.115000 | |
dc.identifier.relatedurl | https://www.sciencedirect.com | |
dc.identifier.uri | https://hdl.handle.net/20.500.14352/72448 | |
dc.journal.title | Physica E: Low-dimensional Systems and Nanostructures | |
dc.language.iso | eng | |
dc.publisher | Elsevier Science BV | |
dc.relation.projectID | PID2019-106820RB-C21 | |
dc.rights.accessRights | open access | |
dc.subject.cdu | 538.9 | |
dc.subject.keyword | Semiconductor | |
dc.subject.keyword | Gap | |
dc.subject.keyword | Heterojunctions | |
dc.subject.keyword | Supersymmetry | |
dc.subject.keyword | Pb_(1-X)SN_(X)Te | |
dc.subject.keyword | Core-shell nanoparticles | |
dc.subject.keyword | Surface states | |
dc.subject.keyword | Topological insulator | |
dc.subject.ucm | Física de materiales | |
dc.subject.ucm | Física del estado sólido | |
dc.subject.unesco | 2211 Física del Estado Sólido | |
dc.title | Tailoring topological states of core-shell nanoparticles | |
dc.type | journal article | |
dc.volume.number | 136 | |
dspace.entity.type | Publication | |
relation.isAuthorOfPublication | 0622c92a-4fa0-4105-b6d0-e6dbb2d45ee0 | |
relation.isAuthorOfPublication | dbc02e39-958d-4885-acfb-131220e221ba | |
relation.isAuthorOfPublication.latestForDiscovery | 0622c92a-4fa0-4105-b6d0-e6dbb2d45ee0 |
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