Propagation of Coulomb-correlated electron-hole pairs in semiconductors with correlated and anticorrelated disorder

Details Propagation of Coulomb-correlated electron-hole pairs in semiconductors with correlated and anticorrelated disorder Propagation of Coulomb-correlated electron-hole pairs in semiconductors with correlated and anticorrelated disorder

2000-02-28

arxiv.org/abs/cond-mat/0002424v1

phys. stat. sol. (b) v.218 pp.125 (2000)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages and 5 ps figures

Scientific paper

Local ultrafast optical excitation of electron-hole pairs in disordered semiconductors provides the possibility to observe experimentally interaction-assisted propagation of correlated quantum particles in a disordered environment. In addition to the interaction driven delocalization known for the conventional single-band TIP-(two-interacting-particles)-problem the semiconductor model has a richer variety of physical parameters that give rise to new features in the temporal dynamics. These include different masses, correlated vs. anticorrelated disorder for the two particles, and dependence on spectral position of excitation pulse.

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