ANU Open Research Repository has been upgraded. We are still working on a few minor issues, which may result in short outages throughout the day. Please get in touch with repository.admin@anu.edu.au if you experience any issues.
 

Magnetic-field-induced modification of the wave-functions in InAs quantum dots

Date

2008

Authors

Lei, Wen
Wibbelhoff, O
Notthoff, C
Marquardt, B
Reuter, D
Wieck, A D
Lorke, A

Journal Title

Journal ISSN

Volume Title

Publisher

Elsevier

Abstract

The probability density of electrons in self-assembled InAs quantum dots is investigated by tunneling magnetocapacitance-voltage spectroscopy. A magnetic field in the plane of the tunneling layer is used to shift the momentum of the electrons tunneling into the dots and this way map the wave functions in k-space. When an additional perpendicular magnetic field is applied, a clear modification of the shape of the "p-state" wave functions is observed. In particular, the p+-state changes from x, y-symmetry with a node along one crystal orientation to an almost circularly symmetric shape when the perpendicular magnetic field is increased from 0 to 9 T.

Description

Keywords

Keywords: Crystal orientation; Crystal symmetry; Electron tunneling; Indium arsenide; Magnetic field effects; Wave functions; Magnetocapacitance; Tunneling layers; Semiconductor quantum dots Magnetic field; Quantum dots; Symmetry; Wave function

Citation

Source

Physica E

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1016/j.physe.2007.08.045

Restricted until