An intermediate layer consisting of a few atoms helps to improve the transport of spin currents from one material to another. Until now, this process involves significant losses.
May 10, 2022
In the latest issue of Science (10 March 2022), TRR227 PI Georg Woltersdorf (project B02) and his team report on how frequencies can easily be multiplied without special circuitry.
Mar 11, 2022
At the 757 th WE-Heraeus-Seminar on "Non-Linear Magnetism" held at Physikzentrum Bad Honnef in early January 2022, Oliver Gückstock and Lisa-Marie Kern, two PhD students of our TRR 227, received the best Poster Award and the best Contributed Talk Award, respectively.
Jan 13, 2022
The upcoming PhD focus session at the DPG Spring Meeting in Regensburg 2022 is jointly organized by young scientists from the SFB/TRR173 Kaiserslautern/Mainz and the SFB/TRR227 from Berlin/Halle.
Jan 10, 2022
Recent results published in Phys. Rev. X: Researchers of the Collaborative Research Center TRR227 “Ultrafast spin dynamics” at Freie Universität Berlin found that the magnetization of laser-excited ferromagnetic iron undergoes the same dynamics independent of the wavelength of the driving laser pulse. Therefore, it is just the amount of heat dumped into the electrons at a given moment that determines the course of the demagnetization.
Dec 21, 2021
Second funding period 2022 - 2025.
Nov 25, 2021
Two PhD students/researchers of the TRR227 share the prestigious INNOMAG e.V. Dissertation Prize 2020 of the Magnetism Division of the Germany Physical Society: Dr. Annika Johansson (MLU Halle, group Quantum Theory of the Solid State ) and Dr. Tom Sebastian Seifert (FU Berlin, THz Physics group ).
Oct 01, 2021
TRR 227 iRTG coordinator Britta Anstötz is trained to be the trainer in "Good Scientific Practice".
Sep 01, 2021
New functionalities of spintronic terahertz emitters: rapid polarization control and on-chip integration
TRR227 scientists publish latest results on spintronic terahertz emitters in Optica and ACS Appl. Nano Mater.
Aug 23, 2021
AIP journal Applied Physics Letters announces upcoming Special Topic issue on "Ultrafast and Terahertz Spintronics".
May 14, 2021
Experiments of T. Kampfrath, G. Woltersdorf and coworkers as well as theory by I. Mertig and coworkers resulted in a multiproject (A05, B02 & B04) publication recently published in Physical Review X .
May 11, 2021
A joint paper of L. Rettig (project A09), R. Ernstorfer (project B07) and W. Widdra (project A06) was recently published in Physical Review Letters .
Apr 26, 2021
Christian Strüber (TRR227 project A01) wins one of the poster prizes of the Joint CRC1242 & TRR227 Workshop
Great success of the Online Workshop on "Exciting Dynamics: How Electrons, Spins, and Phonons Interact" with excellent and very pedagogical talks, vivid discussions and fun and scientifically exciting poster sessions.
Feb 19, 2021
TRR227 projects of G. Schmidt (B02) and G. Woltersdorf (B01 & B02) published their latest results on the integration and characterization of YIG structures on arbitrary substrates in the AIP journal Applied Physics Letters. The paper was selected as featured article and recently highlighted on the front cover of the Vol. 117, Issue 23, 07 December 2020 .
Dec 09, 2020
TRR227 physicists together with colleagues from Konstanz, Prague and Uppsala investigate magnetization dynamics of rare-earth metals for potential application in ultrafast data storage.
Sep 24, 2020
As a collective effort of leading experts from 10 different countries, the 2020 Magnetism Roadmap, which is an Open Access article, is intended to provide a reference point and guide to the interested community on relevant and emerging research directions in modern magnetism. The article consists of 14 sections, each written by an expert in the field and addressing a specific subject on two pages. Contributing authors include: E.Y. Vedmedenko, R.K. Kawakami, D.D. Sheka, P. Gambardella, A. Kirilyuk, A. Hirohata, C. Binek, O. Chubykalo-Fesenko, S. Sanvito, B.J. Kirby, J. Grollier, K. Everschor-Sitte, T. Kampfrath, C.-Y. You and A. Berger.
Aug 26, 2020
Ultrafast electrons in magnetic oxides: a new direction for spintronics? - TRR227 paper in Nature Communications
Special metal oxides could one day replace semiconductor materials that are commonly used today in processors. Now, for the first time, an international team of researchers from Martin Luther University Halle-Wittenberg (MLU), the University of Kaiserslautern and the University of Fribourg in Switzerland was able to observe how electronic charge excitation changes electron spin in metal oxides in an ultrafast and inphase manner. The study was published in the journal "Nature Communications".
Aug 19, 2020
Best Poster Award for Maximilian Paleschke and Best Student Talk Award for Reza Rouzegar at USPM 2020
Mar 19, 2020
Combining experiment and theory, researchers from the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI) and the Max Planck Institute of Microstructure Physics have disentangled how laser pulses can manipulate magnetization via ultrafast transfer of electrons between different atoms.
Feb 18, 2020
Together with colleagues from Spain and the UK, TRR 227 scientist Unai Atxitia (project A08 ) find giant localised spin-Peltier effect due to ultrafast domain wall motion in antiferromagnetic metals.
Feb 06, 2020