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- W2048696992 abstract "The dynamics of a cold photoexcited electron–hole system created by resonant excitation with picosecond optical pulses are studied by time-resolved emission and pump–probe measurements. A rapid build-up of strong metallic reflection in the mid-infrared region was observed, which indicates the creation of electron–hole plasma via the exciton or biexciton Mott transition. Transient reflection spectra clearly show the transformation of high-density electron–hole plasma into a metallic colloid-like state within 10 ps. In the meantime, broad plasma emission turns to a narrow emission band, in which the spectral profile does not change within several tens of picoseconds. These features in the emission spectra disappear when switched to the band-to-band excitation. An analysis of the reflection and emission spectra reveals that the density of metastable electron–hole liquid is as high as 1020 cm−3. This indicates that the plasma formation via the Mott transition is crucial to eliminate excess heating for reaching the low-temperature states of an electron–hole ensemble." @default.
- W2048696992 created "2016-06-24" @default.
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- W2048696992 date "2002-12-01" @default.
- W2048696992 modified "2023-10-03" @default.
- W2048696992 title "Electron–hole liquid formation by exciton and biexciton resonant excitation in CuCl" @default.
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- W2048696992 doi "https://doi.org/10.1016/s0022-2313(02)00442-8" @default.
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