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
Karsten Held Dynamical vertex approximation - a step beyond dynamical mean field theory 29.06.2010 15:00
Dieter Lüst Strings at LHC 24.06.2010 15:00
Ansgar Liebsch Correlation induced spin freezing transition in FeSe and FeAsLaO: a dynamical mean field study 24.06.2010 14:00
Dr. Victor Sokolov Optical evidence of strong d-p coupling in Zn1-xMnxO 23.06.2010 13:00
Miloš Lokajíček ml. Program Fermilab a spolupráce s ČR 21.06.2010 15:00
Jan Hladký 50 let DESY 17.06.2010 15:00
Christian Colliex EELS mapping, a key component for the exploration of the nanoworld 17.06.2010 10:00
Ilja Turek Ab initio theory of galvanomagnetic phenomena in random and non-random ferromagnets 15.06.2010 15:00
J. Kulveit, MFF UK Nukleace kvantových teček v halogenidových matricích 15.06.2010 13:00
Remi Arras Electronic structure near the Fe3O4/MgO(001) interface and near structural defects in magnetite 10.06.2010 14:00
Miloš Lokajíček st. Spor Einstein-Bohr, jeho skutečné řešení a důsledky 03.06.2010 15:00
Lukáš Palatinus Nové přístupy ke strukturní analýze krystalických materiálů rentgenovou a elektronovou difrakcí 26.05.2010 15:00
Pavel Jelínek Analysis of simultaneous STM/AFM measurements with atomic resolution 25.05.2010 15:00
Dr. Y. J. Dappe An accurate DFT-based method for the treatment of weak and van der Waals interactions : the LCAO-S2+vdW formalism 25.05.2010 10:00
Pavel Středa Anomalous Hall conductivity: local orbitals approach 24.05.2010 16:00
Jean Zinn-Justin Path integrals in physics: the main achievements 20.05.2010 15:00
Katarzyna Roszak Non-Markovian noise at the Fermi edge singularity in quantum dots 18.05.2010 15:00
Michael Unger Studies of the Cosmic Ray Composition with the Pierre Auger Observatory 18.05.2010 14:00
284. rozhovory o aktuálních otázkách rentgenové a neutronové strukturní analýzy 18.05.2010 10:00
Jan Hladký Zlatá léta šedesátá v LVE SÚJV Dubna (aneb Naše začátky II) 13.05.2010 15:00
Krzysztof Jakubczak Ultrafast soft x-ray beamline at PALS 12.05.2010 14:00
Roman Gröger Mezoskopický popis strukturálních fázových transformací v materiálech s variabilní dislokační hustotou 12.05.2010 10:00
Josef Klusoň (Masarykova univerzita, Brno a CERN, Ženeva) Gravity or Thermodynamics or what E. Verlinde says 10.05.2010 15:00
Prof. Chen-Ti Hu and Yuan-Hong Lo Fe Pd-X slitiny s tvarovou pamětí a jejich vlastnosti 06.05.2010 10:00
Frank Grosse, Paul Drude Institute for Solid State Electronics, Berlin, Germany Modeling of condensed matter systems based on ab initio results 04.05.2010 15:00
Deepa Kasinathan Relation of structure, magnetism, doping and pressure in AFe{2-x}TxAs2 (A=Ca,Sr,Ba,Eu; T=Co,Rh,Ru) 29.04.2010 14:00
Workshop o vybraných problémech v magnetických tvarových slitinách 24.04.2010
Alexander Kupčo (FZÚ) Produkce jetů s velkou příčnou hybností v experimentu D0 22.04.2010 15:00
Josef Schmiedberger Hybridní RF/DC plazmatron pro generaci singletového kyslíku v kyslík-jódovém laseru 21.04.2010 14:00
Jan Hladký Částicová zlatá léta šedesátá (aneb Naše začátky I) 15.04.2010 15:00

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