Fyzikální ústav Akademie věd ČR

Seminars and workshops of department 23

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

Seminar / Tuesday, 09.06.2015 15:00 - 16:00

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

Seminar / Tuesday, 16.06.2015 15:00

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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Past seminars and workshops
Karel Král, Miroslav Menšík Energy and Charge Transfer between Quasi-zero-dimensional Nanostructures 26.05.2015 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
Matthias Vojta Coupled-dimer magnets: Systematic expansions, quantum criticality, and disorder 28.04.2015 15:00
Jiří Chaloupka Magnetism of layered honeycomb iridates 21.04.2015 15:00
Hendrik Vita Interaction of magnetic and non-magnetic metals with graphene 14.04.2015 15:00
Jan Skolimowski Anderson and Mott transitions in presence of the spin-dependent disorder 07.04.2015 15:00
Vladislav Pokorný Perturbation theory of a zero-pi transition in a superconducting quantum dot system 24.03.2015 15:00
Peter Mohn Research at the Center for Computational Materials Science (CMS) 16.12.2014 15:00
Artem Ryabov Diffusion of a tagged particle in open single-file systems 21.10.2014 15:00
Prokop Hapala Is the Concept of Electronic Band Structure valid for Si Nanocrystals of few nm in Size? 27.05.2014 15:00
Soon Cheol Hong Roles of nonmagnetic elements on enhancement of perpendicular magnetocrystalline anisotropy: first-principles studies 13.05.2014 15:00
Vladimír Zobač Non-adiabatic molecular dynamics with electron transitions 06.05.2014 15:00
Romuald Lemański Gapless metallic charge-density-wave phase driven by strong electron correlations 29.04.2014 15:00
Karel Netočný Geometric and kinetic aspects of nonequilibrium steady states 25.03.2014 15:00
Maria Valentyuk Microscopic picture of magnetic frustration effects and related phenomena in novel materials 12.03.2014 15:00
Karel Carva Calculating ultrafast magnetization dynamics 04.03.2014 15:00
František Máca The influence of adsorbates on the magnetic structure of the Fe/Ir(001) surface 25.02.2014 15:00
Balazs Ujfalussy Quasiparticle spectrum of superconductor-normal metal heterojunctions 06.02.2014 10:00
Peter Markoš Numerical Analysis of Anderson localization 29.11.2013 10:00
Viktor Holubec Theoretical description of non-equilibrium energy transformation processes on the level of molecular structures 26.11.2013 15:00
Tadeusz Domański Superconducting fluctuations in the electron systems with real-space pairs 12.11.2013 15:00
D.S. Shapiro Dynamic regime of conduction in the Luttinger liquid with an impurity 29.10.2013 15:00
Karel Král Energy transfer between nanostructures 22.10.2013 15:00
Jan Kuneš Off-diagonal order in materials close to spin-state transition 08.10.2013 15:00
Vladislav Pokorný Spectral and transport properties of a superconducting quantum dot system 01.10.2013 15:00
Jakub Železný DFT calculations of electronic and magnetic structure of CuMnAs and other I-Mn-V compounds 25.06.2013 15:00
Anna Kauch Continuous replica symmetry breaking in mean-field spin-glass models: Perturbation expansion without the replica trick 14.05.2013 15:00
Josef Kudrnovský Spin-disordered resistivity of ferromagnetic metals: the disordered local moment approach 30.04.2013 15:00
M. Etzkorn Following dynamics at the atomic scale: The relaxation of a spin measured by time resolved STM 19.04.2013 14:00

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