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
D. Nohavica, E. Hulicius Nanotechnology Safety - rizika nanomateriálů a nanotechnologií 15.12.2010 10:30
RNDr. Barbara Zitová, Ph.D. The role of computer image processing in restauration of art works 14.12.2010 15:00
Martin Švec Graphene moires on platinum & Probing the paths towards RNA synthesis 14.12.2010 15:00
Anna Kauch Mott-insulator and superfluid phases of correlated bosons -- the bosonic dynamical mean-field approach with the strong coupling impurity solver 07.12.2010 15:00
Karel Král Long-time Photoluminescence Kinetics in Quantum Dot Samples 30.11.2010 15:00
Prof. Dieter Vollhardt Colloquium Cukrovarnická 25.11.2010 15:00
Philippe Olivero and Ghita Rahal IN2P3 Computing Center site report 25.11.2010 15:00
Stanislav Kamba Multiferroics and search for the permanent electric dipole moment of the electron 24.11.2010 15:00
Mirian Tsulaia Interaction Vertices and BCFW Recursion Relations for Higher Spin Fields 23.11.2010 15:00
Janka Kočišová Competitive behavior of a multiagent system 23.11.2010 15:00
Hakaru Mizoguchi Development of the 1st generation laser-produced plasma source for EUV lithography 19.11.2010 10:00
D. Munzar Pseudogap a zárodky supravodivosti vysoko nad kritickou teplotou v poddopovaných kuprátových supravodičích: nové poznatky vyplývající ze studia optické odezvy v infračerveném oboru spektra 16.11.2010 14:00
Fréderic Guittard Bio-inspired materials to build-up supersurfaces 16.11.2010 10:00
Tomáš Jakoubek Measurement of properties of J/Psi as a method to test functionality of the ATLAS inner detector 12.11.2010 13:30
Xiaomin Li and Haosu Luo Resistance Switching of Transition Metal Oxides for RRAM Application 12.11.2010 10:00
Michal Fulem Nové výsledky a plány měření tenze par organokovů 10.11.2010 10:00
Josef Kudrnovský Magnetism of mixed quaternary Heusler alloys: (Ni 1-x,Tx)2 MnSn (T=Cu,Pd) as a case study 09.11.2010 15:00
Roman Lysák From top quark physics to the Higgs boson 08.11.2010 15:00
Dr. Jan Honolka Molecule-regulated magnetism at surfaces: from metal-organic network to molecule/ferromagnetic semiconductor hybrids 03.11.2010 15:00
Antonio Lucianetti Nonlinear thermal effects and Amplified Spontaneous Emission (ASE) in high-average-power solid-state lasers 27.10.2010 14:30
Vladimír Železný Topological insulators 26.10.2010 10:00
Pavel Růžička Measurement of soft diffraction with the calorimeter of the ATLAS detector 22.10.2010 13:30
Prof. Akira Endo High average power, short pulse solid state lasers for compact X-ray sources via Compton scattering and plasma emission 21.10.2010 15:00
Dr. Joerg Wunderlich Colloquium Cukrovarnická - Spin Hall effect transistor 21.10.2010 15:00
Iegor Rafalovskyi Irradiation influence on charge carrier transport in AlGaN/GaN heterostructure 21.10.2010 10:00
Jan Kuneš Computer modeling of electronic correlations in solids 20.10.2010 15:00
Andrea Campoleoni Asymptotic symmetries of 3D gravity coupled to higher-spin fields 11.10.2010 15:00
Dr. Marina Tjunina Epitaxial control of polar order in perovskites 08.10.2010 13:00
Andrea Taroni Atomistic Spin Dynamics of Low-dimensional Magnets 06.10.2010 15:00
Stéphane Sebban Progress on laser driven x-ray sources at the Laboratoire d’Optique Appliquée 06.10.2010 09:30

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