We study the electronic states of core multishell semiconductor nanowires, including the effect of strong magnetic fields. We show that the multishell overgrowth of a free-standing nanowire, together with the prismatic symmetry of the substrate, may induce quantum confinement of carriers in a set of quasi-1D quantum channels corresponding to the nanowire edges. Localization and interchannel tunnel coupling are controlled by the curvature at the edges and the diameter of the underlying nanowire. We also show that a magnetic field may induce either Aharonov-Bohm oscillations of the energy levels in the axial configuration, or a dimensional transition of the quantum states from quasi-1D to Landau levels for fields normal to the axis. Explicit predictions are given for nanostructures based on GaAs, InAs, and InGaN with different symmetries.

Magnetic States in Prismatic Core Multishell Nanowires / Ferrari, Giulio; Goldoni, Guido; Bertoni, Andrea; G., Cuoghi; Molinari, Elisa. - In: NANO LETTERS. - ISSN 1530-6984. - STAMPA. - 9:(2009), pp. 1631-1635. [10.1021/nl803942p]

Magnetic States in Prismatic Core Multishell Nanowires

FERRARI, Giulio;GOLDONI, Guido;BERTONI, Andrea;MOLINARI, Elisa
2009

Abstract

We study the electronic states of core multishell semiconductor nanowires, including the effect of strong magnetic fields. We show that the multishell overgrowth of a free-standing nanowire, together with the prismatic symmetry of the substrate, may induce quantum confinement of carriers in a set of quasi-1D quantum channels corresponding to the nanowire edges. Localization and interchannel tunnel coupling are controlled by the curvature at the edges and the diameter of the underlying nanowire. We also show that a magnetic field may induce either Aharonov-Bohm oscillations of the energy levels in the axial configuration, or a dimensional transition of the quantum states from quasi-1D to Landau levels for fields normal to the axis. Explicit predictions are given for nanostructures based on GaAs, InAs, and InGaN with different symmetries.
2009
9
1631
1635
Magnetic States in Prismatic Core Multishell Nanowires / Ferrari, Giulio; Goldoni, Guido; Bertoni, Andrea; G., Cuoghi; Molinari, Elisa. - In: NANO LETTERS. - ISSN 1530-6984. - STAMPA. - 9:(2009), pp. 1631-1635. [10.1021/nl803942p]
Ferrari, Giulio; Goldoni, Guido; Bertoni, Andrea; G., Cuoghi; Molinari, Elisa
File in questo prodotto:
File Dimensione Formato  
NanoLett 9 1631 2009.pdf

Accesso riservato

Tipologia: Versione pubblicata dall'editore
Dimensione 756.68 kB
Formato Adobe PDF
756.68 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/617279
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 64
  • ???jsp.display-item.citation.isi??? 61
social impact