Dephasing in modulation-doped quantum structures probed by THz time-domain spectroscopy
Applied Physics Letters2002Vol. 81(23), pp. 4344–4346
Citations Over TimeTop 18% of 2002 papers
Abstract
The dephasing of intersubband transitions in semiconductor heterostructures was investigated by time-resolved THz spectroscopy. Single quantum structures show dephasing rates, which are nearly identical to scattering rates obtained by conventional Hall measurements and allow insight into the dephasing dynamics. In multiple quantum wells, inhomogeneous broadening of the density of states is the main dephasing mechanism.
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