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

W. Lei; O. Wibbelhoff; C. Notthoff; B. Marquardt; D. Reuter; A. D. Wieck; A. Lorke

doi:10.1016/j.physe.2007.08.045

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

W. Lei, O. Wibbelhoff, C. Notthoff, B. Marquardt, D. Reuter, A. D. Wieck, A. Lorke^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1870-1872
Number of pages	3
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	40
Issue number	6
DOIs	https://doi.org/10.1016/j.physe.2007.08.045
Publication status	Published - Apr 2008

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10.1016/j.physe.2007.08.045

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title = "Magnetic-field-induced modification of the wave-functions in InAs quantum dots",

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.",

keywords = "Magnetic field, Quantum dots, Symmetry, Wave function",

author = "W. Lei and O. Wibbelhoff and C. Notthoff and B. Marquardt and D. Reuter and Wieck, {A. D.} and A. Lorke",

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T1 - Magnetic-field-induced modification of the wave-functions in InAs quantum dots

AU - Lei, W.

AU - Wibbelhoff, O.

AU - Notthoff, C.

AU - Marquardt, B.

AU - Reuter, D.

AU - Wieck, A. D.

AU - Lorke, A.

PY - 2008/4

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N2 - 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.

AB - 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.

KW - Magnetic field

KW - Quantum dots

KW - Symmetry

KW - Wave function

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M3 - Article

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EP - 1872

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 6

ER -

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

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