Fyzikální ústav Akademie věd ČR

Seminars

Charged domain walls in BaTiO3 single-crystals

Tuesday, 20.10.2015 10:00 - 11:00

Dr. P. Bednyakov (École Polytechnique Fédérale de Lausanne, Switzerland)

Recently observed properties of charged ferroelectric domain walls (CDWs) make these structures promising for application in future electronics. It was demonstrated experimentally that the quasi two-dimensional electron gas is present at head-to-head CDWs [1]. The CDWs are therefore good conductors that can be moved by an external electric field. As suggested by theory [2] and experiment [3] CDWs with very low spacing may cause the enhancement of piezoelectric and dielectric properties. However, the problem of controlled regular growth and formation of CDWs is not well understood.

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In silico studies of electronic current in nano-junctions: Exciting atomic motion

Thursday, 22.10.2015 15:00 - 16:00

Mads Brandbyge (Department of micro and nanotechnology & Center for Nanostructured Graphene (CNG), Technical University of Denmark (DTU), Denmark)

In the Landauer approach to nanoscale transport the electrons are assumed to bypass a conducting junction ballistically and equilibrate through energy exchange in the electrodes.

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Interplay of charge, spin and thermal imbalances in normal-metal/ferromagnet bilayers

Friday, 23.10.2015 10:00 - 11:00

Can Onur Avci (ETH Zurich)

Recent demonstrations of magnetization switching driven by current-induced spin-orbit torques (SOTs) have drawn considerable attention in the field of spintronics. The SOTs are associated with the spin Hall and interfacial effects, and have been found to occur in a variety of normal-metal/ferromagnet systems. In this talk I will present harmonic transverse (Hall) and longitudinal (magnetoresistance) measurements on a variety of normal-metal/ferromagnet systems with a special focus on Pt/Co, Ta/Co layers with in-plane magnetization. I will discuss a new magnetoresistance effect (unidirectional spin Hall magnetoresistance) that we have recently discovered.

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Manipulation of magnetization by spin-orbit torques

Friday, 23.10.2015 14:00 - 15:00

Kevin Garello (ETH Zurich)

Recent demonstrations of perpendicular magnetization switching induced by in-plane current injection in ferromagnetic heterostructures have drawn attention to a class of spin torques based on orbital-to-spin momentum transfer.
After describing the main spin-orbit interactions observed in ferromagnetic heterostructures and some of our latest measurements, I will present their straightforward impact on magnetic memory technologies.

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Past seminars
Iaroslav Gnilitskyi and Leonardo Orazi Nonlinear laser lithography for industrial applications 16.10.2015 11:00
Chi-Chung Kei Applications of atomic layer deposition (ALD) 15.10.2015 13:30
Pavel Středa Orbital momentum, anomalous Hall effect and topological phase transformation 13.10.2015 15:00
Dr. Maria Zhuravleva Crystal Growth of Halide Scintillators With High Energy Resolution 13.10.2015 13:00
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
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
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 Measurement of properties of W a Z bosons at LHC + information about conference 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
Iván Brihuega Visualizing and manipulating graphene physics at the atomic scale 21.05.2015 15:00

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