Shell filling and paramagnetism in few-electron colloidal nanoplatelets
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Título
Shell filling and paramagnetism in few-electron colloidal nanoplateletsFecha de publicación
2022-08-05Editor
American Physical SocietyISSN
0031-9007; 1079-7114Cita bibliográfica
Llusar, J., & Climente, J. I. (2022). Shell Filling and Paramagnetism in Few-Electron Colloidal Nanoplatelets. Physical Review Letters, 129(6)Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
Colloidal semiconductor nanoplatelets are excellent optical emitters, which combine a quasi-2D structure with strong in-plane Coulomb interactions. Here, we go beyond the photoexcitation regime and investigate theor ... [+]
Colloidal semiconductor nanoplatelets are excellent optical emitters, which combine a quasi-2D structure with strong in-plane Coulomb interactions. Here, we go beyond the photoexcitation regime and investigate theoretically the effect of charging nanoplatelets with a few interacting fermions (electrons or holes). This introduces severe Coulomb repulsions in the system, enhanced by the inherent dielectric confinement. We predict strong electronic correlations and electron-electron exchange energies (over 20 meV) in type-I (CdSe/CdS) and type-II (CdSe/CdTe) nanoplatetets, which give rise to characteristic physical phenomena. These include shell filling spectra deviating from the Aufbau principle, large addition energies which permit deterministic control of the number of charges at room temperature and paramagnetic electron spin configuration activated at cryogenic temperatures. [-]
Publicado en
Physical Review Letters, Vol. 129, Iss. 6 (2022)Entidad financiadora
Ministerio de Ciencia e Innovación (MICINN) | Universitat Jaume I
Código del proyecto o subvención
PID2021-128659NB-I00 | UJI-B2021-06
Derechos de acceso
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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