Artículo
Quantum size effect affecting environment assisted electron capture in quantum confinements
Fecha de publicación:
06/2019
Editorial:
American Institute of Physics
Revista:
Journal of Chemical Physics
ISSN:
0021-9606
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Ultrafast inter-Coulombic electron capture (ICEC) has been established as an important energy-transfer process in open paired-quantum-dot systems which can mediate between entrapment of free-moving electrons and release of trapped ones elsewhere by long-range electron-electron interaction within nanowires. Previous studies indicated ICEC enhancement through population and secondary decay of two-center resonance states, the latter known as inter-Coulombic decay (ICD). This study investigates the quantum-size effect of single- and double-electron states in an established model of a quasi-one-dimensional nanowire with two embedded confinement sites, represented by a pair of Gaussian wells. We analyze the ICEC related electron flux density as a function of confinement size and are able to clearly identify two distinct capture channels: a direct long-range electron-electron impulse and a conversion of kinetic energy to electron-electron correlation energy with consecutive ICD. The overlay of both channels makes ICEC extremely likely, while nanowires are a strong candidate for the next miniaturization step of integrated-circuit components.
Palabras clave:
Electronic correlation
,
Energy Transfer
,
Nanowires
,
Quantum confinement
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Articulos(IFEG)
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Citación
Molle, Axel; Berikaa, Essam R.; Pont, Federico Manuel; Bande, Annika; Quantum size effect affecting environment assisted electron capture in quantum confinements; American Institute of Physics; Journal of Chemical Physics; 150; 22; 6-2019; 224105-224105
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