Fyzikální ústav Akademie věd ČR

Semináře

Jahn-Teller phonons inducing ferroelectricity in GaV4S8

Úterý, 14.06.2016 10:30 - 11:30

Jiri Hlinka (Oddělení dielektrik )

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

Úterý, 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

Čtvrtek, 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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Spin Seebeck effect in Fe3O4 heterostructures

Čtvrtek, 16.06.2016 14:00

Alberto Anadon (Universidad de Zaragoza, Spain)

The interaction between heat and spin currents has been a very active field of study and highly boosted recently since the discovery of the spin Seebeck effect (SSE). The mechanism and control of spin injection, detection and, in general, the optimization of SSE signal is still in progress.

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Minulé semináře
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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
A. Hála, M. Nikl Podpora komercializace výzkumu ve FZÚ z programu GAMA 05.10.2015 15:00
V. Korokin & P. Holba Charakterizace fází se strukturou apatitu a použití termické analýzy 17.09.2015 10:30
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
E. Hulicius, A. Hospodková, J. Vyskočil, M. Zíková Informace o 16. EW MOVPE konferenci 01.07.2015 10:00
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 Měření vlastností bosonů W a Z na LHC + informace o konferenci 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
Vladimir Stephanovich Thermodynamics of magnetically ordered and disordered systems 04.06.2015 14:00
Prof. B. Dabrowski Search for Displacive-type Multiferroics with a Huge Magnetoelectric Coupling 02.06.2015 10:00
Karel Král, Miroslav Menšík Energy and Charge Transfer between Quasi-zero-dimensional Nanostructures 26.05.2015 15:00
Marek Pasciak Finite temperature phonon spectra in perovskites from atomistic simulations 26.05.2015 10:00

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