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Summary form only given. We report on recent time-resolved photoluminescence (PL) measurements of CdSe-ZnSe self-assembled quantum dots. In order to visualize single dots, we take time-resolved spectra through 200-nm apertures defined through a metal film on the surface of the sample.
Summary form only given. Since the discovery of high transition temperature superconductivity more than decade ago a controversial debate still exists on the underlying pairing mechanism not yet resolved. A key parameter is the carrier concentration in the conducting copper-oxide planes, which, in the case of YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// (YBCO), is varied by altering the oxygen content...
Summary form only given. Femtosecond intersubband spectroscopy provides fundamental insights into the ultrafast nonequilibrium processes of single-component, quasi-two-dimensional carrier plasmas. The time scales of intersubband scattering, thermalization and cooling are essential for understanding the relevant scattering processes and for designing novel infrared devices such as the quantum cascade...
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