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
Jan Benedikt Cold atmospheric plasmas for material synthesis and surface treatment 23.03.2016 10:00
Luca M. Ghiringhelli Learning descriptors from materials science (big) data 22.03.2016 15:00
Reinhard J. Maurer Structure and Dynamics of Functional Molecules on Surfaces 22.03.2016 10:00
Prof. Johann Rafelski Electron and its mass 17.03.2016 14:00
Vincent Pichot Synthesis and applications of detonation nanodiamonds 17.03.2016 10:00
Xavi Marti Spintronics from nano to geo: antiferromagnetic memories, parkings and volcanoes 17.03.2016 10:00
M. M. Ugeda Low dimensionality effects in single layers of transition metal dichalcogenides 15.03.2016 10:00
Jörg Wunderlich Antiferromagnetic spintronics: Large magnitude magneto-resistance effects and current controlled switching 10.03.2016 10:00
Jan Kuneš Doping excitonic insulator: a way to new quantum states 01.03.2016 15:00
Antonio Cammarata Electro-Structural Coupling effects on "Intrinsic Friction" in Transition Metal Dichalcogenides 23.02.2016 15:00
Yousra Tahri Crystallization of L-Glutamic acid: Comparison between stirred and stagnant conditions 23.02.2016 13:00
Giniyat Khaliullin Excitonic magnetism and doping effects in Van Vleck-type Mott insulators 16.02.2016 15:00
Tobias Meier, Rémy Pawlak Charge distribution of adsorbed single molecules: the effect of the underlying surface 11.02.2016 15:00
Karel Výborný Anomalous Hall Effect in antiferromagnets 09.02.2016 10:00
Katerina Dohnalova Surface engineering of indirect bandgap semiconductor nanoparticles for enhanced optical properties 04.02.2016 13:00
Josef Kudrnovský Anomalous Hall effect in disordered alloys: first-principle study 26.01.2016 15:00
ELI Beamlines as a Chance for Czech Academic Research 26.01.2016 13:00
Nicolás Lorente Physics of magnetic adsorbates 26.01.2016 10:00
Petr Kužel Perspectives of terahertz and multi-terahertz spectroscopy in the time domain 26.01.2016 10:00
Dr. Bogdan Voisiat Direct laser interference patterning technique as a flexible tool for surface patterning 21.01.2016 15:30
Dr. Sergejus Orlovas Polarisation-tailored focal spot engineering: generation, characterisation and applications 21.01.2016 15:00
Dr. Gediminas Račiukaitis How to employ ultra-short pulse lasers for precise material processing 21.01.2016 14:00
Oscar Custance Atomic scale characterisation of pentacene and C60 on the anatase (101) surface using atomic force microscopy 19.01.2016 10:00
Karel Carva Ultrarychlá magnetizační dynamika a spintronika: informace z ab initio výpočtů 19.01.2016 10:00
Joris More-Chevalier Magnetoelectric coupling in Tb0.3Dy0.7Fe2/Pt/ PbZr0.56Ti0.44O3 thin films deposited on Pt/TiO2/SiO2/Si substrate 12.01.2016 10:00
Steven Schofield Defects and molecules at silicon surfaces. 12.01.2016 10:00
Jakub Železný Spintronics with Antiferromagnets 08.01.2016 10:00
Jiří Hlinka Relaxor ferroelectrics: questions and answers 05.01.2016 10:00
Christian Teichert Atomic-force microscopy based exploration of cellulose fibers and wood fiber - nanowire composites 22.12.2015 10:00
Sander Otte Atomic spin chains as testing ground for quantum magnetism 17.12.2015 15:00

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