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
Prof. Junji Kawanaka Current status of TRAM laser and its application at ILE/Osaka 04.11.2013 14:00
Michael Prouza Dark matter and dark energy in contemporary cosmology 31.10.2013 14:00
D.S. Shapiro Dynamic regime of conduction in the Luttinger liquid with an impurity 29.10.2013 15:00
Vít Zajac Charge transport in THz regime: carrier localization vs. effective medium effects 24.10.2013 10:00
Karel Král Energy transfer between nanostructures 22.10.2013 15:00
Jan Fischer Calculation of the coupling parameter α_s from hadronic decay of the τ lepton 17.10.2013 14:00
Neha Topnani and Anna Zep Selected results from our partners in liquid crystal research 17.10.2013 10:00
Peter West Symmetries and their role in fundamental physics 15.10.2013 15:00
Mateusz Mrukiewicz Dual-frequency nematic liquid crystals 15.10.2013 10:00
Jiří Kvita Differential spectra for t-tbar events in the ATLAS experiment 10.10.2013 14:00
Jan Kuneš Off-diagonal order in materials close to spin-state transition 08.10.2013 15:00
Héctor Vázquez Electron transport in molecular systems 08.10.2013 10:00
Martin Schnabl Stringy and higher-spin activities in the theory department 03.10.2013 14:00
Vladislav Pokorný Spectral and transport properties of a superconducting quantum dot system 01.10.2013 15:00
Prof. Makoto Konagai Research and Development of Innovative Solar Cells – Establishing Global Research Centers 27.09.2013 10:00
Vladislav Pokorný Spectral and transport properties of a superconducting quantum dot system 26.09.2013 14:00
Isodiana Crupi Plasmonic metal nanoparticles for thin film solar cells 24.09.2013 10:00
Alexander Kupčo News from the EPS 2013 conference 19.09.2013 14:00
Cedric Rocha Leao Ab-initio investigation of the degradation process in TlBr: causes and possible fixes 18.09.2013 15:00
Pavel Novák Calculation of crystal field parameters with Wannier functions 12.09.2013 14:00
Christophe Ballif Thin film silicon layers: from low cost thin film solar modules to high efficiency crystalline heterojunction cells 11.09.2013 10:00
Jose Repond Imaging Calorimetry for Lepton Colliders 05.09.2013 14:00
Anna Artmenko XPS analysis of plasma polymers and nanocomposite films without breaking vacuum 03.09.2013 13:00
James P. Lewis High-throughput computational design of photocatalytic materials 03.09.2013 10:00
Prof. A. Nikitin Integrable models with matrix potentials 26.08.2013 15:00
Dr. Ingo Dirnstorfer Synergies between photovoltaics and microelectronics 19.07.2013 10:00
Prof. R. Gopakumar Minimal Model Holography 18.07.2013 15:00
Prof. Dr. N. J. Ianno Band Gap Engineering of Samarium Cerium Sulfide Alloys for Photovoltaic Thin Films 17.07.2013 13:30
Prof. Dr. R. J. Soukup The Promise of Earth Abundant Sulfide and Selenide Thin Films for Solar Cell Applications 17.07.2013 13:00
Deepak Verma, Ph.D. Hybrid (Organic/Inorganic semiconductors) absorbing layer for solar cell applications 16.07.2013 10:00

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