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Dynamics of Coulomb-correlated electron-hole pairs in disordered semiconductor nanowires | | I. Varga
; C. Schlichenmaier
; T. Meier
; K. Maschke
; P. Thomas
; S.W. Koch
; | | Date: |
23 Nov 2001 | | Journal: | Electronic Correlations: from Meso- to Nanophysics (T. Martin, G. Montambaux and J. Tran Thanh Van eds.) (EDP Sciences, 2001) pp. 343. | | Subject: | Disordered Systems and Neural Networks | cond-mat.dis-nn | | Affiliation: | 1,2), C. Schlichenmaier , T. Meier , K. Maschke , P. Thomas and S.W. Koch ( Philipps Universitaet Marburg, Germany, Budapest University of Technology and Economics, Hungary, Ecole Polytechnique Federale de Lausanne, Switzerland | | Abstract: | The dynamics of optically generated electron-hole pairs is investigated in a disordered semiconductor nanowire. The particle pairs are generated by short laser pulses and their dynamics is followed using the Heisenberg equation of motion. Is is shown that Coulomb-correlation acts against localization in the case of the two-interacting particles (TIP) problem. Furthermore, currents are generated using a coherent combination of full-gap and half-gap pulses. The subsequent application of a full-gap pulse after time $ au$ produces an intraband echo phenomenon $2 au$ time later. The echo current is shown to depend on the mass ratio between the electrons and the holes. | | Source: | arXiv, cond-mat/0111452 | | Services: | Forum | Review | PDF | Favorites | |
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