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Exceptionally slow dephasing of electronic continuum states in a semiconductor

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1995

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Leisching, Patrick
Bakker, Huib J.
Kurz, Heinrich

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Physical Review B. 1995, 51(24), pp. 18015-18018. Available under: doi: 10.1103/PhysRevB.51.18015

Zusammenfassung

The coherent excitation of excitonic and continuum Wannier-Stark states in a semiconductor superlattice with femtosecond laser pulses leads to a modulation of both the interband and the intraband polarization. The field dependence of the Bloch oscillation frequency of the nonlinear interband polarization is shown to differ strongly from that of the intraband polarization. We find that the observed modulation of the intraband polarization results from the superposition of electronic continuum states. This implies that the intraband dephasing time of these continuum states is exceptionally long.

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530 Physik

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ISO 690LEISCHING, Patrick, Thomas DEKORSY, Huib J. BAKKER, Heinrich KURZ, Klaus KÖHLER, 1995. Exceptionally slow dephasing of electronic continuum states in a semiconductor. In: Physical Review B. 1995, 51(24), pp. 18015-18018. Available under: doi: 10.1103/PhysRevB.51.18015
BibTex
@article{Leisching1995Excep-5316,
  year={1995},
  doi={10.1103/PhysRevB.51.18015},
  title={Exceptionally slow dephasing of electronic continuum states in a semiconductor},
  number={24},
  volume={51},
  journal={Physical Review B},
  pages={18015--18018},
  author={Leisching, Patrick and Dekorsy, Thomas and Bakker, Huib J. and Kurz, Heinrich and Köhler, Klaus}
}
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