196 citations · 584 across the 17 of their papers we have counts for
17 papers
Coherent potential approximation for spatially correlated disorder
Roland Zimmermann, Christoph Schindler
The coherent potential approximation (CPA) is extended to describe satisfactorily the motion of particles in a random potential which is spatially correlated and smoothly varying.…
Analysis of the exciton-exciton interaction in semiconductor quantum wells
Christoph Schindler, Roland Zimmermann
The exciton-exciton interaction is investigated for quasi-two-dimensional quantum structures. A bosonization scheme is applied including the full spin structure. For generating the…
Non-circular semiconductor nanorings of type I and II: Emission kinetics in the exciton Aharonov-Bohm effect
Michal Grochol, Roland Zimmermann
Transition energies and oscillator strengths of excitons in dependence on magnetic field are investigated in type I and II semiconductor nanorings. A slight deviation from circular…
Electron-Phonon Interaction in Embedded Semiconductor Nanostructures
Frank Grosse, Roland Zimmermann
The modification of acoustic phonons in semiconductor nanostructures embedded in a host crystal is investigated including corrections due to strain within continuum elasticity theo…
LO Phonon-Induced Exciton Dephasing in Quantum Dots: An Exactly Solvable Model
E. A. Muljarov, R. Zimmermann
It is widely believed that, due to its discrete nature, excitonic states in a quantum dot coupled to dispersionless LO phonons form everlasting mixed states (exciton polarons) show…
Memory and correlation effects in the exciton-phonon kinetics
G. Mannarini, R. Zimmermann
Memory and correlation effects in the interband absorption from quantum wells due to exciton-phonon dynamics are investigated. They are traced back to the frequency dependence and…