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

被引：5

作者：

Lei, W. ^{[1
,2
,4
]}

Wibbelhoff, O. ^{[1
,2
]}

Notthoff, C. ^{[1
,2
]}

Marquardt, B. ^{[1
,2
]}

Reuter, D. ^{[3
]}

Wieck, A. D. ^{[3
]}

Lorke, A. ^{[1
,2
]}

机构：

[1] Univ Duisburg Essen, Fachbereich Phys, D-47078 Duisburg, Germany

[2] Univ Duisburg Essen, CeNIDE, D-47078 Duisburg, Germany

[3] Ruhr Univ Bochum, Fak Phys, D-44780 Bochum, Germany

[4] Australian Natl Univ, Dept Elect Mat Engn, Canberra, ACT 0200, Australia

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 06期

关键词：

wave function; symmetry; magnetic field; quantum dots;

D O I：

10.1016/j.physe.2007.08.045

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1870 / 1872

页数：3

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