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5 papers · 2 filters
Interaction potential between dynamic dipoles: polarized excitons in strong magnetic fields
M. A. Olivares-Robles, S. E. Ulloa
The interaction potential of a two-dimensional system of excitons with spatially separated electron-hole layers is considered in the strong magnetic field limit. The excitons are a…
Kondo and mixed valence regimes in multi-level quantum dots
A. L. Chudnovskiy, S. E. Ulloa
We investigate the dependence of the ground state of a multi-level quantum dot on the coupling to an external fermionic system and on the interactions in the dot. As the coupling t…
Electronic states in a quantum lens
Arezky H. Rodriguez, C. Trallero-Giner, S. E. Ulloa +1
We present a model to find analytically the electronic states in self-assembled quantum dots with a truncated spherical cap (`lens') geometry. A conformal analytical image is desig…
Mobility Edge in Aperiodic Kronig-Penney Potentials with Correlated Disorder: Perturbative Approach
F. M. Izrailev, A. A. Krokhin, S. E. Ulloa
It is shown that a non-periodic Kronig-Penney model exhibits mobility edges if the positions of the scatterers are correlated at long distances. An analytical expression for the en…
Magnetic field effects on quantum ring excitons
Jakyoung Song, Sergio E. Ulloa
We study the effect of magnetic field and geometric confinement on excitons confined to a quantum ring. We use analytical matrix elements of the Coulomb interaction and diagonalize…