Fyzikální ústav Akademie věd ČR

Seminars

Surface engineering of indirect bandgap semiconductor nanoparticles for enhanced optical properties

Thursday, 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

Tuesday, 09.02.2016 10:00 - 11:30

Karel Výborný (Institute of Physics ASCR)

(A Journal Club Lecture.) The common notion that the anomalous Hall effect (AHE) is proportional to magnetisation suggests that antiferromagnets with zero magnetisation should exhibit no AHE. Despite this intuition, when certain symmetries are broken, AHE was still predicted to appear in multi-sublattice antiferromagnets with zero magnetisation (such as IrMn3 or Mn3Sn). Recently, 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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Past seminars
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
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
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
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
Martin Friák Multi-scale modeling of hierarchical biocomposites 30.06.2015 15:00
Leonid Glebov Volume Holographic Elements for Spectroscopy and High-Power Laser Applications 26.06.2015 10:00
Urko Petralanda Holguin Structural instabilities and sequence of phase transitions in SBN and SBT from first principles and Monte Carlo simulations 23.06.2015 15:00
Dr. Pavel Staroba Measurement of properties of W a Z bosons at LHC + information about conference CIPANP 2015 18.06.2015 13:30
Václav Drchal Angle-resolved photoemission spectra of Heusler alloys: Ni2MnGa as a case study 16.06.2015 15:00
Kirill Belashchenko Effects of thermal spin fluctuations on the electronic properties of itinerant magnets: Surprises from ab initio calculations 09.06.2015 15:00
Elena Buixaderas / Urko Petralanda Metastable ferroelectric states in antiferroelectric PZT ceramics (EB); Phase transtion mechanism of SBT and SBN (UP) 09.06.2015 14:00
Joachim Reichert Single-Molecule Junctions in Strong Optical Fields 09.06.2015 10:00

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