Fyzikální ústav Akademie věd ČR

Semináře

Single-Molecule Junctions in Strong Optical Fields

Út, 09/06/2015 - 10:00 - 11:00

Joachim Reichert (Physik Department, TU München, Germany)

In order to advance the development of unimolecular electronic devices (e.g. film devices) it is mandatory to improve understanding of electron transport and its loss mechanisms in single molecules. In this aspect, multi-parameter studies are required to provide more information on such systems.

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Metastable ferroelectric states in antiferroelectric PZT ceramics

Út, 09/06/2015 - 14:00 - 15:00

Elena Buixaderas (Oddělení dielektrik, Fyzikální ústav AV ČR)

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Effects of thermal spin fluctuations on the electronic properties of itinerant magnets: Surprises from ab initio calculations

Út, 09/06/2015 - 15:00 - 16:00

Kirill Belashchenko (University of Nebraska-Lincol)

Abstract: Thermal spin fluctuations are present in equilibrium in all magnetic materials. These fluctuations interact with electronic quasiparticles and induce temperature-dependent changes in such observables as the spectral densities, magnetocrystalline anisotropy, and transport properties. This talk will review surprising examples of such effects in metallic magnets found using first-principles calculations. Spin fluctuations are included in these calculations within the vector disordered local moment model.

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Angle-resolved photoemission spectra of Heusler alloys: Ni2MnGa as a case study

Út, 16/06/2015 - 15:00

Václav Drchal (Oddělení teorie kondenzovaných látek, FzU AVCR)

Abstract: We have calculated the electronic structure and angle-resolved photoemission spectra of Heusler alloys from first principles using the TB-LMTO method. The disorder, caused either by non-stoichiometry, or by swapping of atoms between sublattices is treated within the CPA. Matrix elements are included within the dipole approximation.

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Minulé semináře
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
Iván Brihuega Visualizing and manipulating graphene physics at the atomic scale 21.05.2015 15:00
R. Cimrman, M. Novák, and J. Vackář Isogeometric analysis, environment-reflecting separable pseudopotentials and Hamiltonian rank-m updates in the evaluation of Hellman-Feynman forces 12.05.2015 15:00
Miroslav Kotrla Multiscale modeling of magnetic metals heteroepitaxial overlayers. 05.05.2015 15:00
Dr. Xavier Martí From/to science to/from business 30.04.2015 10:00
Matthias Vojta Coupled-dimer magnets: Systematic expansions, quantum criticality, and disorder 28.04.2015 15:00
Bert Voigtländer Charge Transport Measurements at the Nanoscale using a Multi-Tip STM 28.04.2015 10:00
Prof. David A. Crandles The Search for Ferromagnetism in SrTiO3 28.04.2015 10:00
Prof. Shih-Jye Sun The property variations of ZnO responding to UV irradiations 27.04.2015 13:30
Prof. Hua Shu Hsu Introduction to Magnetic Circular Dichroism and its application in magnetic semiconductor 27.04.2015 13:00
Vladislav Šimák Dvacet let od objevu top kvarku 23.04.2015 14:00
Jiří Chaloupka Magnetism of layered honeycomb iridates 21.04.2015 15:00
Alexander Poddubny Surface engineering in silicon- and germanium- based nanocrystals 21.04.2015 10:00
Hendrik Vita Interaction of magnetic and non-magnetic metals with graphene 14.04.2015 15:00
Roman Fasel Electronic and optical properties of atomically precise graphene nanoribbons 09.04.2015 15:00
Holger Kersten Non-conventional diagnostics for process plasmas 08.04.2015 15:00
Jan Skolimowski Anderson and Mott transitions in presence of the spin-dependent disorder 07.04.2015 15:00
Prof. David Crandles Infrared spectroscopy of dilute magnetic semiconductors 02.04.2015 10:00
Karel Jurek a hosté 9. pracovní schůzka skupiny lokální rtg. mikroanalýzy 26.03.2015 10:00
Vladislav Pokorný Perturbation theory of a zero-pi transition in a superconducting quantum dot system 24.03.2015 15:00
Tomáš Polívka Carotenoid photophysics Rich excited-state properties of seemingly simple molecules 24.03.2015 10:00
Jiří Mareš K- and eta mesons in atomic nuclei 19.03.2015 14:00
Styliani Skiadopoulou Spin and lattice excitations of a BiFeO3 thin film and ceramics 17.03.2015 10:00
Pavel Středa Scattering matrix approach to the anomalous Hall effect 11.03.2015 10:00
Veronica Goian Ferroelectricity and spin-phonon coupling in multiferroic Sr1-xBaxMnO3 03.03.2015 10:00
Dr. Deepak Kar All about partonic showers 19.02.2015 14:00
Jiří Červenka DNA detection using graphene and diamond 17.02.2015 10:00

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