Listar por autoría "1d3a3879-e674-4326-bcf6-f3ff4fec612a"
Mostrando ítems 1-7 de 7
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Aharonov-Bohm oscillations and electron gas transitions in hexagonal core-shell nanowires with an axial magnetic field
Royo Valls, Miguel; Segarra, Carlos; Bertoni, Andrea; Goldoni, Guido; Planelles, Josep American Physical Society (2015)We use spin-density-functional theory within an envelope function approach to calculate electronic states in a GaAs/InAs core-shell nanowire pierced by an axial magnetic field. Our fully three-dimensional quantum modeling ... -
Excitonic Resonance in Semiconductor–Metal Nanohybrids
Climente, Juan I.; Movilla, Jose L.; Goldoni, Guido; Planelles, Josep ACS (2011-07)We use a configuration interaction approach within the envelope function approximation to study the nature of the excitonic resonance in nanohybrids, composite nanoparticles (NPs) combining a semiconducting and a metallic ... -
Magnetophotoluminescence in GaAs/AlAs core-multishell nanowires: A theoretical investigation
Buscemi, Fabrizio; Royo Valls, Miguel; Bertoni, Andrea; Goldoni, Guido American Physical Society (2015)The magnetophotoluminescence in modulation doped core-multishell nanowires is predicted as a function of photoexcitation intensity in nonperturbative transverse magnetic fields. We use a self-consistent field approach within ... -
Photoluminescence spectroscopy of trions in quantum dots: A theoretical description
Goldoni, Guido; Bertoni, Andrea; Climente, Juan I. American Physical Society (2008)We present a full configuration-interaction study of the spontaneous recombination of neutral and singly charged excitons trions in semiconductor quantum dots from weak- to strong-coupling regimes. We find that the ... -
Prediction of inelastic light scattering spectra from electronic collective excitations in GaAs/AlGaAs core-multishell nanowires
Royo Valls, Miguel; Bertoni, Andrea; Goldoni, Guido American Physical Society (2015)We predict inelastic light scattering spectra from electron collective excitations in a coaxial quantum well embedded in a core-multishell GaAs/AlGaAs nanowire. The complex composition, the hexagonal cross section, and ... -
Symmetries in the collective excitations of an electron gas in core-shell nanowires
Rollo Valls, Miguel; Bertoni, Andrea; Goldoni, Guido American Physical Society (2014)We study the collective excitations and inelastic light-scattering cross section of an electron gas confined in a GaAs/AlGaAs coaxial quantum well. These systems can be engineered in a core-multishell nanowire and inherit ... -
Unintentional High-Density p-Type Modulation Doping of a GaAs/AlAs Core–Multishell Nanowire
Jadczak, Joanna N.; Płochocka, Paulina; Mitioglu, Anatolie A.; Breslavetz, I.; Royo, Miquel; Bertoni, Andrea; Goldoni, Guido; Smoleński, Tomasz; Kossacki, Piotr; Kretinin, Andrey V.; Shtrikman, Hadas; Maude, Duncan Kennedy American Chemical Society (2014)Achieving significant doping in GaAs/AlAs core/shell nanowires (NWs) is of considerable technological importance but remains a challenge due to the amphoteric behavior of the dopant atoms. Here we show that placing a narrow ...