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
Oleg Babchenko Fabrication and characterization of selected carbon-based nano-structures 06.05.2014 13:30
Prof. Nikolay Galkin Silicon-Silicide nanocomposite heterostructures for Silicon based photonics, opto- and thermoelectronics 06.05.2014 13:00
Romuald Lemański Gapless metallic charge-density-wave phase driven by strong electron correlations 29.04.2014 15:00
Magdaléna Hromadová Electrochemically addressable molecules for molecular electronics 29.04.2014 09:30
Roman Pasechnik Vector - like Technicolor at the LHC 28.04.2014 14:00
Gregorio Bernardi Recent Results from the Tevatron 23.04.2014 10:00
J. Enrique Ortega Electronic states at donor-acceptor/ metal interfaces probed with electron spectroscopies: NEXAFS, XPS and UPS 22.04.2014 10:00
Petr Trávníček Highest energy cosmic rays at observatories CTA and Pierre Auger 16.04.2014 15:00
Dr. Otakar Frank Raman spectroscopy of graphene – basic characterization and beyond 08.04.2014 10:00
Pavel Cejnar Chaos in collective nuclear dynamics 03.04.2014 14:00
Vítězslav Jarý Thermally induced ionization and quenching processes in novel oxide and sulfide scintillation materials 01.04.2014 13:00
Dr. M. Gary Higher Spin Lifshitz Holography 28.03.2014 15:00
Karel Netočný Geometric and kinetic aspects of nonequilibrium steady states 25.03.2014 15:00
Josef Mysliveček Thin films of ceria for model catalytic experiments 25.03.2014 10:00
Dr. Ryo Yasuhara Transparent magneto-optic TGG ceramics for the high energy and high power laser applications 24.03.2014 11:00
Oleg Lunov Advanced Physical Methods in Cell Biology and Nanomedicine 19.03.2014 15:00
Neda Neykova ZnO nanocolumns arrays for thin film silicon solar cells 18.03.2014 13:00
Ing. Jozef Vincenc Oboňa, PhD. Lased-induced Periodic Surface Structures (LIPSSs) Initiation and “growth” 18.03.2014 13:00
Sergey Varlamov LASER CRYSTALLISED SILICON THIN FILMS AND SOLAR CELLS ON GLASS: SIGNIFICANC OF THE INTERFACE 18.03.2014 10:00
Aurélien Manchon / Dominique Givord Spin-Orbit Caloritronics / Electric Field Effects on Magnetism in Metals 14.03.2014 10:00
Maria Valentyuk Microscopic picture of magnetic frustration effects and related phenomena in novel materials 12.03.2014 15:00
Kristin Poduska The role of electrochemistry in semiconductor growth and degradation 06.03.2014 10:00
Karel Carva Calculating ultrafast magnetization dynamics 04.03.2014 15:00
Katharina J. Franke Magnetic properties of single molecules and metal-organic networks on surfaces 04.03.2014 13:00
Jiří Červenka Chemical sensing by graphene field effect transistors 04.03.2014 10:00
Marek Taševský FCC – Future Circular Collider Study - information from the Kick-off workshop 27.02.2014 14:00
František Máca The influence of adsorbates on the magnetic structure of the Fe/Ir(001) surface 25.02.2014 15:00
Prof. Shuji Sakabe Research activities of Laboratory for Laser-Matter Science, Institute for Chemical Research 21.02.2014 11:50
Prof. Lalit M. Kukreja Laser Surface Modifications and Additive Manufacturing: Recent Developments at RRCAT 21.02.2014 11:00
Dr. Al Erlandson Energetics Modeling and Slit Filters for Diode- Pumped Solid-State Lasers 21.02.2014 09:50

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