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
Mirian Tsulaia Interaction Vertices and BCFW Recursion Relations for Higher Spin Fields 23.11.2010 15:00
Janka Kočišová Competitive behavior of a multiagent system 23.11.2010 15:00
Hakaru Mizoguchi Development of the 1st generation laser-produced plasma source for EUV lithography 19.11.2010 10:00
D. Munzar Pseudogap a zárodky supravodivosti vysoko nad kritickou teplotou v poddopovaných kuprátových supravodičích: nové poznatky vyplývající ze studia optické odezvy v infračerveném oboru spektra 16.11.2010 14:00
Fréderic Guittard Bio-inspired materials to build-up supersurfaces 16.11.2010 10:00
Tomáš Jakoubek Measurement of properties of J/Psi as a method to test functionality of the ATLAS inner detector 12.11.2010 13:30
Xiaomin Li and Haosu Luo Resistance Switching of Transition Metal Oxides for RRAM Application 12.11.2010 10:00
Michal Fulem Nové výsledky a plány měření tenze par organokovů 10.11.2010 10:00
Josef Kudrnovský Magnetism of mixed quaternary Heusler alloys: (Ni 1-x,Tx)2 MnSn (T=Cu,Pd) as a case study 09.11.2010 15:00
Roman Lysák From top quark physics to the Higgs boson 08.11.2010 15:00
Dr. Jan Honolka Molecule-regulated magnetism at surfaces: from metal-organic network to molecule/ferromagnetic semiconductor hybrids 03.11.2010 15:00
Antonio Lucianetti Nonlinear thermal effects and Amplified Spontaneous Emission (ASE) in high-average-power solid-state lasers 27.10.2010 14:30
Vladimír Železný Topological insulators 26.10.2010 10:00
Pavel Růžička Measurement of soft diffraction with the calorimeter of the ATLAS detector 22.10.2010 13:30
Prof. Akira Endo High average power, short pulse solid state lasers for compact X-ray sources via Compton scattering and plasma emission 21.10.2010 15:00
Dr. Joerg Wunderlich Colloquium Cukrovarnická - Spin Hall effect transistor 21.10.2010 15:00
Iegor Rafalovskyi Irradiation influence on charge carrier transport in AlGaN/GaN heterostructure 21.10.2010 10:00
Jan Kuneš Computer modeling of electronic correlations in solids 20.10.2010 15:00
Andrea Campoleoni Asymptotic symmetries of 3D gravity coupled to higher-spin fields 11.10.2010 15:00
Dr. Marina Tjunina Epitaxial control of polar order in perovskites 08.10.2010 13:00
Andrea Taroni Atomistic Spin Dynamics of Low-dimensional Magnets 06.10.2010 15:00
Stéphane Sebban Progress on laser driven x-ray sources at the Laboratoire d’Optique Appliquée 06.10.2010 09:30
Dr. Pedro de Andres Physical chemistry on graphene 05.10.2010 10:00
David Šálek Measurement of the proton diffraction longitudinal structure function in H1 experiment 01.10.2010 13:30
Pavel Marton Atomic origin of ferroelectric hardening in PbTiO3 and Pb(ZrTi)O3 24.09.2010 16:00
Taneli Laamanen Electronic Structure of Rare Earth Ions in the Sr2MgSi2O7 Persistent Luminescence Host Material 24.09.2010 14:00
Igor Beinik Electrical characterization of semiconductor nanostructures by scanning probe microscopy based techniques 21.09.2010 14:00
Dr. Daisuke Takeuchi Single Crystal Diamond Electronic Devices 10.09.2010 14:00
Tomáš Ostatnický Spontaneous coherence in systems of cavity polaritons 07.09.2010 10:00
Ashoke Sen Extremal black hole entropy 30.08.2010 15:00

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