Prof.
Hanns-Ulrich Habermeier
(Max-Planck-Institute-FKF)
19/11/2008, 09:00
Mastering the technological challenges in semiconductor thin film physics has been the baseline for the microelectronic revolution in the second half of the last century. Similarly, complex oxides with strong electron correlation, characterized by their plethora of functionalities - ranging from superconductivity to ferromagnetism - are expected to play a similar role in electronics in this...
Lino Miguel Da Costa Pereira
(Univ. do Porto-IFIMUP-IN)
19/11/2008, 09:30
Magnetically doped semiconductors (dilute magnetic semiconductors - DMS) are seen as strong candidates to make use of the carriers spin in spintronic devices. Latest results of both experiment and theory are driving the research focus towards wide-gap semiconductors doped with 3d transition metals. However, any attempt to understand the room temperature ferromagnetism observed in these...
Joao Martins Correia
(UFA, Instituto Tecnológico e Nuclear)
19/11/2008, 09:50
This talk reports on the results from the electron emission channeling on-line run of the ECSLI collaboration, which took place during this year’s Mn beam time in September. We were able to determine the lattice sites of implanted 56Mn (2.6 h) in ZnO, Ge and GaAs, and of 61Co (1.6h) in GaN during the run. We found that Mn in ZnO prefers substitutional Zn sites and Mn in Ge substitutional Ge...
Mr
Frank Wagner
(Technische Physik, Universität des Saarlandes, D-66041 Saarbrücken, Germany)
19/11/2008, 10:10
Understanding and control of diffusion profiles of intrinsic and extrinsic defects in semiconductors is of central importance for developing electronic and optoelectronic devices. In previous studies [1] it was shown that diffusion of Ag in CdTe can lead to uncommon diffusion profiles. The diffusion of Ag and Cu in CdTe crystals after implantation of 111Ag or 67Cu with 60 keV and annealing at...
Vitor Bras De Sequeira Amaral
(University of Aveiro)
19/11/2008, 10:30
Complex oxides, particularly manganites (R-D)MnO3 present a wealth of behaviours associated with coupled spin, lattice, charge and orbital degrees of freedom, that can be controlled by chemical doping. Perturbed Angular Correlation (PAC) studies in several systems were performed to locally probe these effects using the electric field gradient (EFG) and magnetic hyperfine field generated by the...
