1.
Phys Rev Lett
; 123(5): 057403, 2019 Aug 02.
Artigo
em Inglês
| MEDLINE
| ID: mdl-31491330
RESUMO
We perform two-dimensional coherent spectroscopy on CdSe/CdZnS core-shell colloidal quantum dots at cryogenic temperatures. In the two-dimensional spectra, sidebands due to electronic coupling with CdSe lattice LO-phonon modes are observed to have evolutions deviating from the exponential dephasing expected from Markovian spectral diffusion, which is instantaneous and memoryless. Comparison to simulations provides evidence that LO-phonon coupling induces energy-gap fluctuations on the finite timescales of nuclear motion. The femtosecond resolution of our technique probes exciton dynamics directly on the timescales of phonon coupling in nanocrystals.
2.
Rev Inst Med Trop Sao Paulo
; 28(3): 181-4, 1986.
Artigo
em Português
| MEDLINE
| ID: mdl-3823741
3.
Rev Saude Publica
; 20(1): 33-6, 1986 Feb.
Artigo
em Português
| MEDLINE
| ID: mdl-2875514
4.
Rev Inst Med Trop Sao Paulo
; 27(3): 143-4, 1985.
Artigo
em Português
| MEDLINE
| ID: mdl-4095450