Tailoring topological states of core-shell nanoparticles

Simple item page
dc.contributor.authorMartínez Strasser, Carolina
dc.contributor.authorBaba, Yuriko
dc.contributor.authorDíaz Fernández, Álvaro
dc.contributor.authorDomínguez-Adame Acosta, Francisco
dc.date.accessioned2023-06-22T12:26:28Z
dc.date.available2023-06-22T12:26:28Z
dc.date.issued2022-02
dc.description©2022 Elsevier This work was supported by Ministerio de Ciencia e Innovacion, Spain (Grant PID2019-106820RB-C21).
dc.description.abstractIn 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.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/69270
dc.identifier.doi10.1016/j.physe.2021.115000
dc.identifier.issn1386-9477
dc.identifier.officialurlhttp://dx.doi.org/10.1016/j.physe.2021.115000
dc.identifier.relatedurlhttps://www.sciencedirect.com
dc.identifier.urihttps://hdl.handle.net/20.500.14352/72448
dc.journal.titlePhysica E: Low-dimensional Systems and Nanostructures
dc.language.isoeng
dc.publisherElsevier Science BV
dc.relation.projectIDPID2019-106820RB-C21
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordSemiconductor
dc.subject.keywordGap
dc.subject.keywordHeterojunctions
dc.subject.keywordSupersymmetry
dc.subject.keywordPb_(1-X)SN_(X)Te
dc.subject.keywordCore-shell nanoparticles
dc.subject.keywordSurface states
dc.subject.keywordTopological insulator
dc.subject.ucmFísica de materiales
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2211 Física del Estado Sólido
dc.titleTailoring topological states of core-shell nanoparticles
dc.typejournal article
dc.volume.number136
dspace.entity.typePublication
relation.isAuthorOfPublication0622c92a-4fa0-4105-b6d0-e6dbb2d45ee0
relation.isAuthorOfPublicationdbc02e39-958d-4885-acfb-131220e221ba
relation.isAuthorOfPublication.latestForDiscovery0622c92a-4fa0-4105-b6d0-e6dbb2d45ee0
Download
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Dguez-Adame229 preprint.pdf
Size:
1.99 MB
Format:
Adobe Portable Document Format
downoload Download
Collections
Artículos