Fyzikální ústav Akademie věd ČR

Semináře

Charged domain walls in BaTiO3 single-crystals

Úterý, 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.

Více >>

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

Čtvrtek, 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.

Více >>

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

Pátek, 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.

Více >>

Manipulation of magnetization by spin-orbit torques

Pátek, 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 (SOTs).
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.

Více >>

Minulé semináře
Dieter Lüst Strings at LHC 24.06.2010 15:00
Ansgar Liebsch Correlation induced spin freezing transition in FeSe and FeAsLaO: a dynamical mean field study 24.06.2010 14:00
Dr. Victor Sokolov Optical evidence of strong d-p coupling in Zn1-xMnxO 23.06.2010 13:00
Miloš Lokajíček ml. Program Fermilab a spolupráce s ČR 21.06.2010 15:00
Jan Hladký 50 let DESY 17.06.2010 15:00
Christian Colliex EELS mapping, a key component for the exploration of the nanoworld 17.06.2010 10:00
Ilja Turek Ab initio theory of galvanomagnetic phenomena in random and non-random ferromagnets 15.06.2010 15:00
J. Kulveit, MFF UK Nukleace kvantových teček v halogenidových matricích 15.06.2010 13:00
Remi Arras Electronic structure near the Fe3O4/MgO(001) interface and near structural defects in magnetite 10.06.2010 14:00
Miloš Lokajíček st. Spor Einstein-Bohr, jeho skutečné řešení a důsledky 03.06.2010 15:00
Lukáš Palatinus Nové přístupy ke strukturní analýze krystalických materiálů rentgenovou a elektronovou difrakcí 26.05.2010 15:00
Pavel Jelínek Analysis of simultaneous STM/AFM measurements with atomic resolution 25.05.2010 15:00
Dr. Y. J. Dappe An accurate DFT-based method for the treatment of weak and van der Waals interactions : the LCAO-S2+vdW formalism 25.05.2010 10:00
Pavel Středa Anomalous Hall conductivity: local orbitals approach 24.05.2010 16:00
Jean Zinn-Justin Path integrals in physics: the main achievements 20.05.2010 15:00
Katarzyna Roszak Non-Markovian noise at the Fermi edge singularity in quantum dots 18.05.2010 15:00
Michael Unger Studies of the Cosmic Ray Composition with the Pierre Auger Observatory 18.05.2010 14:00
284. rozhovory o aktuálních otázkách rentgenové a neutronové strukturní analýzy 18.05.2010 10:00
Jan Hladký Zlatá léta šedesátá v LVE SÚJV Dubna (aneb Naše začátky II) 13.05.2010 15:00
Krzysztof Jakubczak Ultrafast soft x-ray beamline at PALS 12.05.2010 14:00
Roman Gröger Mezoskopický popis strukturálních fázových transformací v materiálech s variabilní dislokační hustotou 12.05.2010 10:00
Josef Klusoň (Masarykova univerzita, Brno a CERN, Ženeva) Gravity or Thermodynamics or what E. Verlinde says 10.05.2010 15:00
Prof. Chen-Ti Hu and Yuan-Hong Lo Fe Pd-X slitiny s tvarovou pamětí a jejich vlastnosti 06.05.2010 10:00
Frank Grosse, Paul Drude Institute for Solid State Electronics, Berlin, Germany Modeling of condensed matter systems based on ab initio results 04.05.2010 15:00
Deepa Kasinathan Relation of structure, magnetism, doping and pressure in AFe{2-x}TxAs2 (A=Ca,Sr,Ba,Eu; T=Co,Rh,Ru) 29.04.2010 14:00
Workshop o vybraných problémech v magnetických tvarových slitinách 24.04.2010
Alexander Kupčo (FZÚ) Produkce jetů s velkou příčnou hybností v experimentu D0 22.04.2010 15:00
Josef Schmiedberger Hybridní RF/DC plazmatron pro generaci singletového kyslíku v kyslík-jódovém laseru 21.04.2010 14:00
Jan Hladký Částicová zlatá léta šedesátá (aneb Naše začátky I) 15.04.2010 15:00
Václav Vrba Experiment ATLAS v CERN 14.04.2010 15:00

Copyright © 2008-2014, Fyzikální ústav AV ČR, v. v. i.