Lecture F. Parmigiani
|23 juni 2009||FWN-Building 5118.-152, Nijenborgh 4, 9747 AG, Groningen|
|Speaker:||Prof. Dr. F. Parmigiani|
|Affiliation:||University of Trieste, Italy|
|Title:||Low energy excitations and time-dependent dielectric function in CuGeO3|
|Date:||Tue Jun 23, 2009|
|Host:||Paul van Loosdrecht|
|Telephone:||+31 50 363 8149|
Nowadays one of the most interesting problem in condensed matter is represented by the understanding of the photo-excited many-body processes in cuprates by measuring the time-dependent dielectric function. Among the wide family of the cuprates CuGeO3 represents a quite suitable system for photo-induced charge transfer (CT) time resolved experiments.
Here, after the studies we have reported in the past on the d-d phonon-assisted, CT and Zhang-Rice (ZR) excitations in CuGeO3 ,by XPS, ResPES and RIXS, the first measurements of the TR-dielectric function and theidentification of the main mechanisms related to the d-d and CT photo-excitations will be presented and discussed.
|Laatst gewijzigd:||22 oktober 2012 14:30|