Making use of a droplet-epitaxial technique, we realize nanometer-sized quantum ring
complexes, consisting of a well-defined inner ring and an outer ring. Electronic structure …

We study spectroscopically the current produced by a charged particle moving in a nanosize
semiconductor quantum ring subject to a perpendicular magnetic field. Several Aharonov …

The quantum nature of matter lies in the wave function phases that accumulate while
particles move along their trajectories. A prominent example is the Aharonov-Bohm phase …

The Aharonov-Bohm effect is commonly believed to be a typical feature of the motion of a
charged particle interacting with the electromagnetic vector potential. Here we present a …

Shape transformations of partially capped self-assembled InAs quantum dots grown on InP
are studied. Atomic force microscopy images show large anisotropic redistribution of the …

The magnetic field effects on excitons in an InAs nanoring are studied theoretically. By
numerically diagonalizing the effective-mass Hamiltonian of the problem that can be …

Using a variational approach, we have calculated the binding energies (E 1 s, 2 sb) and
interband emission energy (E ph) of an exciton confined in G a A s/G a 1− x A lx A s quantum …

We use a plane-wave technique to study the electron and hole wave functions in self-
assembled InGaAs quantum rings, investigating the influence on the electron-hole overlap …

Near-infrared spectra of self-assembled quantum rings are calculated using the k⋅ p
method with rectangular band-offset potentials in three dimensions. The effective-mass …

The optical exciton Aharonov-Bohm effect—ie, an oscillatory component in the energy of
optically active (bright) states—is investigated in nanorings. It is shown that a small effective …