Imaging the Electron Wave Function in Self-Assembled Quantum Dots
E. E. Vdovin,1*
A. Levin,1
A. Patanè,1
L. Eaves,1
P. C. Main,1
Yu. N. Khanin,2
Yu. V. Dubrovskii,1*
M. Henini,1
G. Hill3
Magnetotunneling spectroscopy is used as a noninvasive and
nondestructive probe to produce two-dimensional spatial images of the
probability density of an electron confined in a self-assembled semiconductor quantum dot. The technique exploits the effect of the
classical Lorentz force on the motion of a tunneling electron and can
be regarded as the momentum (k) space analog of scanning tunneling microscopy imaging. The images reveal the elliptical symmetry
of the ground state and the characteristic lobes of the higher energy
states.
1 School of Physics and Astronomy, University
of Nottingham, Nottingham NG7 2RD, UK.
2 Institute
of Microelectronics Technology, Russian Academy of Sciences (RAS),
142432 Chernogolovka, Russia.
3 Department of
Electronic and Electrical Engineering, University of Sheffield,
Sheffield S1 3JD, UK.
*
Permanent address: Institute of Microelectronics Technology,
RAS, 142432 Chernogolovka, Russia.
