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- W2057227523 endingPage "14447" @default.
- W2057227523 startingPage "14435" @default.
- W2057227523 abstract "Femtosecond photon-echo techniques are used to probe the dynamics of quantum-confined excitons in nanocrystals of CdSe. Using three-pulse photon echoes, the modulation of the echo signal from the LO-phonon mode is effectively suppressed, and both the electronic dephasing and the couplings to lattice vibrations are probed directly. Detailed measurements are reported as a function of both nanocrystal size and temperature. The dephasing times vary from 85 fs in nanocrystals of 20-AA{} diameter to 270 fs in 40-AA{} crystals. These rates are determined by several dynamical processes, all of which depend sensitively on the size of the nanocrystal. The time scale of the trapping of the electronic excitation to surface states increases with increasing size. The coupling of the excitation to low-frequency vibrational modes is strongly size dependent as well, in accordance with a theoretical model. The photon echo also gives information on the polar coupling between the electronic state and the LO-phonon mode. This coupling is found to peak at an intermediate size. This phenomenon is interpreted as a manifestation of coupling between the interior confined excitons and localized surface states, which destroys the spherical symmetry of the excited state. Using these data, all of the important contributions to the size-dependent homogeneous linewidths can be enumerated." @default.
- W2057227523 created "2016-06-24" @default.
- W2057227523 creator A5001140872 @default.
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- W2057227523 creator A5035169826 @default.
- W2057227523 creator A5040038536 @default.
- W2057227523 creator A5048167340 @default.
- W2057227523 date "1994-05-15" @default.
- W2057227523 modified "2023-09-30" @default.
- W2057227523 title "Quantum size dependence of femtosecond electronic dephasing and vibrational dynamics in CdSe nanocrystals" @default.
- W2057227523 cites W1600722658 @default.
- W2057227523 cites W1964982345 @default.
- W2057227523 cites W1966126664 @default.
- W2057227523 cites W1966429049 @default.
- W2057227523 cites W1967015136 @default.
- W2057227523 cites W1968865379 @default.
- W2057227523 cites W1971367991 @default.
- W2057227523 cites W1972697442 @default.
- W2057227523 cites W1979194778 @default.
- W2057227523 cites W1979869552 @default.
- W2057227523 cites W1979961825 @default.
- W2057227523 cites W1980604500 @default.
- W2057227523 cites W1982221440 @default.
- W2057227523 cites W1984478308 @default.
- W2057227523 cites W1984874697 @default.
- W2057227523 cites W1990986472 @default.
- W2057227523 cites W1991368703 @default.
- W2057227523 cites W1991866196 @default.
- W2057227523 cites W1994364731 @default.
- W2057227523 cites W1995185593 @default.
- W2057227523 cites W1995191539 @default.
- W2057227523 cites W1995854638 @default.
- W2057227523 cites W1996471018 @default.
- W2057227523 cites W1996953242 @default.
- W2057227523 cites W1999716254 @default.
- W2057227523 cites W2002151855 @default.
- W2057227523 cites W2005653671 @default.
- W2057227523 cites W2007168300 @default.
- W2057227523 cites W2007274640 @default.
- W2057227523 cites W2007847204 @default.
- W2057227523 cites W2008522280 @default.
- W2057227523 cites W2010551863 @default.
- W2057227523 cites W2012118155 @default.
- W2057227523 cites W2013504190 @default.
- W2057227523 cites W2013669807 @default.
- W2057227523 cites W2015109412 @default.
- W2057227523 cites W2016057303 @default.
- W2057227523 cites W2022889983 @default.
- W2057227523 cites W2023188395 @default.
- W2057227523 cites W2025669689 @default.
- W2057227523 cites W2028402842 @default.
- W2057227523 cites W2028630092 @default.
- W2057227523 cites W2029133059 @default.
- W2057227523 cites W2030938976 @default.
- W2057227523 cites W2031053417 @default.
- W2057227523 cites W2031305523 @default.
- W2057227523 cites W2031373348 @default.
- W2057227523 cites W2031709737 @default.
- W2057227523 cites W2033867256 @default.
- W2057227523 cites W2035826230 @default.
- W2057227523 cites W2036038204 @default.
- W2057227523 cites W2039549038 @default.
- W2057227523 cites W2046261097 @default.
- W2057227523 cites W2047521438 @default.
- W2057227523 cites W2048778645 @default.
- W2057227523 cites W2048860988 @default.
- W2057227523 cites W2051180870 @default.
- W2057227523 cites W2051444492 @default.
- W2057227523 cites W2058471433 @default.
- W2057227523 cites W2061667848 @default.
- W2057227523 cites W2063339934 @default.
- W2057227523 cites W2066275583 @default.
- W2057227523 cites W2067265860 @default.
- W2057227523 cites W2070441619 @default.
- W2057227523 cites W2074096852 @default.
- W2057227523 cites W2074498452 @default.
- W2057227523 cites W2075606880 @default.
- W2057227523 cites W2079989312 @default.
- W2057227523 cites W2080620939 @default.
- W2057227523 cites W2081733340 @default.
- W2057227523 cites W2083865073 @default.
- W2057227523 cites W2084148844 @default.
- W2057227523 cites W2086575241 @default.
- W2057227523 cites W2089496377 @default.
- W2057227523 cites W2092329163 @default.
- W2057227523 cites W2092337449 @default.
- W2057227523 cites W2092790214 @default.
- W2057227523 cites W2093065511 @default.
- W2057227523 cites W2094081144 @default.
- W2057227523 cites W2096073562 @default.
- W2057227523 cites W2125220839 @default.
- W2057227523 cites W2132893719 @default.
- W2057227523 cites W2133361348 @default.
- W2057227523 cites W2155597348 @default.
- W2057227523 cites W2168172744 @default.
- W2057227523 cites W2276117411 @default.
- W2057227523 cites W42308261 @default.