Fyzikální ústav Akademie věd ČR

Semináře

Surface engineering of indirect bandgap semiconductor nanoparticles for enhanced optical properties

Čtvrtek, 04.02.2016 13:00 - 14:00

Katerina Dohnalova (Institute of Physics, University of Amsterdam, Science Park 904, 1018XH Amsterdam, The Netherlands)

IV-group bulk crystalline semiconductors, Diamond (C), Silicon and Germanium, all possess diamond structure and indirect bandgaps. The latter property results in very poor emission and band-edge absorption, limiting their use in optoelectronic and photonic applications. In nanocrystal form, oscillator strength is enhanced via the spatial confinement of carriers, which leads to relaxation of the k-selection rule and band-mixing.

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Anomalous Hall Effect in antiferromagnets

Úterý, 09.02.2016 10:00 - 11:30

Karel Výborný (FzÚ)

(Přednáška o článku Nature 527, 212 (2015) ze série Journal Club.) The common notion that the anomalous Hall effect (AHE) is propor- tional to magnetisation M suggests that antiferromagnets with M = 0 should exhibit no AHE. Despite this intuition, when certain symmetries are broken, AHE was still predicted to appear in multi-sublattice antiferromagnets with M = 0 (such as IrMn3 or Mn3Sn). Re- cently, this prediction has been confirmed experimentally and the magnitude of AHE was even found to exceed that of ordinary ferromagnetic metals.

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Minulé semináře
Philipp Werner Dynamical mean field approach to correlated lattice systems 03.11.2015 15:00
Dr. Iñigo Etxebarria Elements of symmetry in structural phase transitions: examples and basic applications of the internet tools 30.10.2015 10:00
Václav Janiš Fulbright Scholar at Louisiana State University I: Thermodynamically consistent description of diffusion in disordered systems 27.10.2015 15:00
Kevin Garello Manipulation of magnetization by spin-orbit torques 23.10.2015 14:00
Can Onur Avci Interplay of charge, spin and thermal imbalances in normal-metal/ferromagnet bilayers 23.10.2015 10:00
Mads Brandbyge In silico studies of electronic current in nano-junctions: Exciting atomic motion 22.10.2015 15:00
Dr. P. Bednyakov Charged domain walls in BaTiO3 single-crystals 20.10.2015 10:00
Iaroslav Gnilitskyi and Leonardo Orazi Nonlinear laser lithography for industrial applications 16.10.2015 11:00
Chi-Chung Kei Applications of atomic layer deposition (ALD) 15.10.2015 13:30
Prof. Mikhail Osipov Molecular theory of ferroelectric ordering in bent-core smectic liquid crystals 15.10.2015 10:00
Pavel Středa Orbital momentum, anomalous Hall effect and topological phase transformation 13.10.2015 15:00
Dr. Maria Zhuravleva Crystal Growth of Halide Scintillators With High Energy Resolution 13.10.2015 13:00
A. Hála, M. Nikl Podpora komercializace výzkumu ve FZÚ z programu GAMA 09.10.2015 10:00
Alexander Lichtenstein Magnetism of correlated materials 07.10.2015 15:00
T. Domański Can electron pairing promote the Kondo state ? 06.10.2015 15:00
Philipp Rahe From structural to charge stability: Molecules on the insulating calcite (1014) surface 06.10.2015 10:00
A. Hála, M. Nikl Podpora komercializace výzkumu ve FZÚ z programu GAMA 05.10.2015 15:00
V. Korokin & P. Holba Charakterizace fází se strukturou apatitu a použití termické analýzy 17.09.2015 10:30
Takashi Kumagai Direct observation and control of H-bond dynamics using scanning probe microscopy 01.09.2015 10:00
Oleg Teryaev Global rotation and spin asymmetries 03.08.2015 16:00
Andrii Sotnikov Magnetic ordering of three-component ultracold fermionic mixtures in optical lattices Dr. Andrii Sotnikov 21.07.2015 15:00
Konrad Jerzy Kapcia Electron orderings and phase separation in extended Hubbard models: superconductivity and charge orderings 16.07.2015 14:00
Matúš Dubecký Accurate Noncovalent Interactions by Quantum Monte Carlo 14.07.2015 15:00
Soumyadeep Misra Radial junction architecture: a new approach for stable and highly efficient silicon thin film solar cells 14.07.2015 10:00
M. Moro Engineering spin structures at the atomic scale 09.07.2015 15:00
Dr. Lars-Oliver Kautschor Extending Synchrotron X-ray Microscopy to the Laboratory - X-Ray Microscopy as a correlative imaging technique 09.07.2015 14:00
Alan D. Bristow Coherent Spectroscopy for Quantum Control of Matter 07.07.2015 10:00
V.P. Zhukov Modeling of propagation of bi-chromatic laser pulse in transparent solids: Preliminary concept 02.07.2015 14:30
E. Hulicius, A. Hospodková, J. Vyskočil, M. Zíková Informace o 16. EW MOVPE konferenci 01.07.2015 10:00
Martin Friák Multi-scale modeling of hierarchical biocomposites 30.06.2015 15:00

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