![]()
AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
|
|||||||
Rezumat articol ediţie STUDIA UNIVERSITATIS BABEÅž-BOLYAI În partea de jos este prezentat rezumatul articolului selectat. Pentru revenire la cuprinsul ediţiei din care face parte acest articol, se accesează linkul din titlu. Pentru vizualizarea tuturor articolelor din arhivă la care este autor/coautor unul din autorii de mai jos, se accesează linkul din numele autorului. |
|||||||
STUDIA PHYSICA - Ediţia nr.2 din 2004 | |||||||
Articol: |
PLENARY LECTURES AND ORAL PRESENTATIONS - ELECTRONIC STRUCTURE AND SYMMETRY CHARACTERIZATION OF II-VI SEMICONDUCTOR QUANTUM DOTS EMBEDDED. Autori: M. IVANDA, C. DEM, K BABOCSI, V KULAKOVSKII, M. SCHMITT, WOLFGANG KIEFER. |
||||||
Rezumat: By means of polarized low wavenumber Raman (LWR) spectroscopy the acoustic vibration modes in commercially available CdSxSe1-x nanocrystals embedded in glass matrix were investigated. The QD’s size was determined using the inverse proportionality between the wavenumber of acoustic modes and the QD’s diameter. Strong exciton-exciton coupling and spin dephasing effects in confined systems were observed by analyzing the polarization properties of femtosecond four wave mixing (FWM) signals. The appearance of strong FWM signals in forbidden polarization geometries is a proof of the formation of biexcitons in QDs and of the splitting of the lowest lying exciton state yielding direct information about the QD’s asymmetry. | |||||||
![]() |
|||||||