Shell filling and paramagnetism in few-electron colloidal nanoplatelets
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INVESTIGACIONMetadades
Títol
Shell filling and paramagnetism in few-electron colloidal nanoplateletsData de publicació
2022-08-05Editor
American Physical SocietyISSN
0031-9007; 1079-7114Cita bibliogràfica
Llusar, J., & Climente, J. I. (2022). Shell Filling and Paramagnetism in Few-Electron Colloidal Nanoplatelets. Physical Review Letters, 129(6)Tipus de document
info:eu-repo/semantics/articleVersió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
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. [-]
Publicat a
Physical Review Letters, Vol. 129, Iss. 6 (2022)Entitat finançadora
Ministerio de Ciencia e Innovación (MICINN) | Universitat Jaume I
Codi del projecte o subvenció
PID2021-128659NB-I00 | UJI-B2021-06
Drets d'accés
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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