Imaging electron wave functions inside open quantum rings.
Combining scanning gate microscopy (SGM) experiments and simulations, we demonstrate low temperature imaging of the electron probability density |Psi|(2)(x,y) in embedded mesoscopic quantum rings. The tip-induced conductance modulations share the same temperature dependence as the Aharonov-Bohm effect, indicating that they originate from electron wave function interferences. Simulations of both |Psi|(2)(x,y) and SGM conductance maps reproduce the main experimental observations and link fringes in SGM images to |Psi|(2)(x,y).
Martins
F
F
Institut Néel, CNRS and Université Joseph Fourier, BP 166, 38042 Grenoble cedex 9, France.
Hackens
B
B
Pala
M G
MG
Ouisse
T
T
Sellier
H
H
Wallart
X
X
Bollaert
S
S
Cappy
A
A
Chevrier
J
J
Bayot
V
V
Huant
S
S