Fyzikální ústav Akademie věd ČR

Semináře

An Operator Calculus for Modeling and Compensation of Complex Memory Nonlinearities in Smart Material Systems

Út, 23/04/2013 - 10:00 - 11:00

Dr. Ing. Klaus Kuhnen (Corporate Research Department, Electrodynamics and Drives, Robert Bosch GmbH, Germany)

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Luminescence Modes in the Semiconductor Micro Structure

Po, 29/04/2013 - 13:00 - 14:00

Huibing Mao (East China Normal University, Shanghai, China)

In the semiconductor microstructure there are two different modes: Fabry-Perot modes and whispering gallery modes. In the band-edge region, there are strong coupling between the exciton and the confined photon, which will lead a quasi-particle: polariton. In a ZnO semiconductor nanobelt with a transverse size of m, more than 20 modes are observed in the band-edge region, and more than 60 modes are observed in the visible region. The theoretical results demonstrate that in the band-edge region the luminescence modes are determined by the polariton modes.

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Studies of phase transitions in Fe containing ternary perovskite multiferroics

Út, 07/05/2013 - 10:00 - 11:00

Igor P. Raevski (Southern Federal University, Rostov-on-Don, Russia)

One of the promising ways of designing new single-phase multiferroic materials is adjusting the temperatures of both ferroelectric and magnetic phase transitions by ion substitutions in the host compound to obtain the maximal magnetoelectric coupling. The aim of the present talk is a brief review of the recent studies of both ferroelectric and magnetic phase transitions in some Fe containing ternary perovskite multiferroics, especially PbFe0.5B0.5O3 (B-Nb, Ta, Sb) and related solid solutions.

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Minulé semináře
Václav Vrba Experiment ATLAS v CERN 14.04.2010 15:00
J. Repp Scanning Tunneling Spectroscopy of Molecules on Thin Insulating Films 13.04.2010 15:00
T.Davídek, M. Spousta (UCJF MFF UK) TILECAL - vlastnosti a rekonstrukce signálu. Jetové algoritmy a jevy v datech z pp srážek při 900 GeV 09.04.2010 13:30
Z. Jirák Elektronické přechody v perovskitových kobaltitech 08.04.2010 14:00
Jiří Kulda Neutron scattering studies of nano-scale order and dynamics in the PMN relaxor ferroelectric 08.04.2010 10:00
L. Smrčka, A. Kromka, V. Novák Optická a elektronová litografie ve FZÚ AV ČR, v. v. i. 31.03.2010 15:00
Leonid Nemenov (JINR, Dubna, Rusko) DIRAC experiment at CERN: results and plans 25.03.2010 15:00
Carlos Pecharromán and Jose L. Menéndez Transparent ceramics: Processing, sintering, characterization and applications 25.03.2010 10:00
Jan Kuriplach Magnetic grain boundaries in Ni and Fe and defect structure in zirconia-based materials 23.03.2010 15:00
Martin Divoký Disperzní systémy pro velmi krátké optické impulzy 17.03.2010 14:00
J. Řídký, J. Lančok, J. Rosa, V. Cháb, K. Winkler, P. Hoefer Středisko Analýzy Funkčních Materiálů SAFMAT 16.03.2010 13:00
F. Hakl, M. Jiřina (Ústav informatiky AV ČR) Možnost separace fyzikálního procesu v LHC metodami NNSU a DME 12.03.2010 13:30
František Máca Magnetic order in the ultrathin iron film on the Ir(001) surface 09.03.2010 15:00
Petříček, Dušek, Palatinus The Third Ad Hoc Workshop on Jana2006 08.03.2010 09:00
Liviu P. Zarbo, FZÚ AV CR, v.v.i. a Texas A&M University Semiclassical Monte Carlo Simulation of Transport in Spintronic Devices 03.03.2010 09:00
Dr. Tomáš Novotný, Katedra fyziky kondenzovaných látek, MMF UK Phonon-Assisted Current Noise in Molecular Junctions 02.03.2010 15:00
Branislav K. Nikolić, Dept. of Physics and Astronomy & Center for Spintronics and Biodetection, University of Delaware Spin pumping in magnetic tunnel junctions and topological insulators: Theory and experiments 25.02.2010 10:00
Dr. Roman Martoňák, Katedra experimentálnej fyziky FMFI UK Bratislava Simulácia štruktúrnych fázových prechodov v kryštáloch pomocou metadynamiky 23.02.2010 10:00
André Perrin Ferroelectric KTa1-xNbxO3 Thin Film for Telecom Applications 16.02.2010 10:00
Libor Juha Unikátní stavy hmoty vytvářené intenzivním rentgenovým zářením 10.02.2010 15:00
M.Spousta, P. Řezníček, M. Marčišovský, O.Kepka První jety v datech, Monitorování b-triggeru, Dimionový kanál, Minimum bias interakce (experiment ATLAS) 05.02.2010 13:30
prof. Stuart Lindsay, Biodesign Institute, Arizona State University Can we exploit quantum mechanics to read genes? 04.02.2010 15:00
Jan Kuneš From Clusters to Crystals: Application of the Dynamical Mean-Field Theory to Materials 02.02.2010 15:00
Marek Taševský Status projektu AFP- ATLAS Forward Physics 29.01.2010 13:30
Milan Vaněček Fotovoltaická přeměna sluneční energie 20.01.2010 15:00
Petříček, Dušek, Palatinus The Second Ad Hoc Workshop on Jana2006 18.01.2010 09:00
Jan Böhm Upgrade Vnitřního detektoru ATLAS 15.01.2010 13:30
Jan Rusz Dynamical screening effects in X-ray absorption spectra of graphene and BN 05.01.2010 15:00
Dr. Pavel Kocan Povrch Si(111) před a po desorpci thallia 15.12.2009 15:00
Dawei Wang Dielectric responses of Pb(Zr,Ti)O3 from first principles in the terahertz frequency range 10.12.2009 10:00

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