Fyzikální ústav Akademie věd ČR

Seminars

Jahn-Teller phonons inducing ferroelectricity in GaV4S8

Tuesday, 14.06.2016 10:30 - 11:30

Jiri Hlinka (Department of Dielectrics )

Interesting ferromagnetic ferroelectric system permitting skyrmionic spin structure phases has also a peculiar ferroelectric transition. We shall briefly report about theoretical and experimental studies of the lattice-dynamics aspects of this phase transition.

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High-pressure behaviour of transition metal dichalcogenides MoS2, MoSe2 and MoTe2 from ab initio simulations

Tuesday, 14.06.2016 15:00 - 16:00

Roman Martoňák (Department of Experimental Physics, Comenius University in Bratislava, Mlynská dolina F2, 842 48 Bratislava, Slovakia)

Abstract: We study the evolution of structural and electronic properties of layered semiconducting transition metal dichalcogenides, MoX2 (X = S, Se, Te) upon increasing pressure, employing ab initio DFT calculations in combination with metadynamics and evolutionary search. We found that in MoS2 a layer sliding structural transition occurs at 20 GPa, converting the 2Hc stacking stable at ambient pressure to the 2Ha stacking (known in 2H-NbSe2)[1].

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Optical trapping of silica nanoparticles in air

Thursday, 16.06.2016 10:00 - 11:00

Lukáš Ondič (Fyzikální ústav AV ČR, v.v.i.; Cikrovarnická 10; Praha 6)

Tightly focused electromagnetic radiation (an optical beam) can be used to capture a small particle without physically touching it. This technique, which has led to a Nobel prize in physics and a whole new industry in biotechnology, could allow for example to explore new physical regimes when it is combined with cooling the particle to its quantum ground state.

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Optical convertors for high average-power, high-repetition laser

Tuesday, 28.06.2016 15:00

H. Turčičová, O. Novák (Dolní Břežany)

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Past seminars
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
Vladislav Šimák What have we learned from Tevatron 27.06.2013 14:00
Prof. David Vanderbilt First-principles theory of flexoelectricity 27.06.2013 10:00
Jakub Železný DFT calculations of electronic and magnetic structure of CuMnAs and other I-Mn-V compounds 25.06.2013 15:00
Prof. Nadezhda M. Bulgakova, PhD, Dr.Sci. Pulsed laser - matter interaction for material processing: Basic processes and perspectives 20.06.2013 11:00
Arthur Moraes On the trail of LHC discoveries: scientific advances that accelerate more than sub-atomic particles 19.06.2013 14:00
Dr. Gilles Cheriaux Apollon-10P: Status and implementation 18.06.2013 14:00
Prof. A. Zhukov Magnetic properties and applications of soft magnetic microwires 14.06.2013 10:00
Jiří Hejbal Measurement of W+W- bosons production cross section in the ATLAS experiment 13.06.2013 14:00
Nikolay Galkin Silicon-Silicide-Silicon multilayer nanoheterostructures for photonics and thermoelectronics applications 10.06.2013 11:00
Prof. Ingo Uschmann Cancelled: X-ray diagnostics for short pulse, high power laser plasma 07.06.2013 11:00
Dr. Alessandro Fortunato Warm laser shock peening 07.06.2013 10:00
Fedir Borodavka PFM and Raman study of ferroelectric domain structure in PbTiO3 thin films 28.05.2013 10:00
Prof. Ekhard Salje Tweed microstructures and Linear-quadratic Coupling in Phase Transitions 17.05.2013 14:15

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