News
Electrical resistance of magnets with and without electron collisions
May 2021
Electrical resistance R of metals arises from collisions of the conduction electrons with obstacles in the surrounding material and from the mass of the electrons. Interestingly, in a magnetic metal, R is larger when the current flows parallel to the magnetic moment M (see Figure (a), left), and it is smaller when the electrons flow perpendicular to it (Figure (b), left). This “anisotropic magnetoresistance” (AMR) is a mature effect, which is usually explained by the assumption that electrons moving parallel to M collide with obstacles more frequently than electrons flowing perpendicularly (see Figures (a,b), middle column).
However, this assumption was recently challenged by researchers from the Czech Republic and Germany, who are also associated with the Collaborative Research Center TRR227 “Ultrafast Spin Dynamics”. They [more...]
However, this assumption was recently challenged by researchers from the Czech Republic and Germany, who are also associated with the Collaborative Research Center TRR227 “Ultrafast Spin Dynamics”. They [more...]
The 2020 Magnetism Roadmap was just published
Aug 2020
The Journal of Physics D: Applied Physics just published the 2020 Magnetism Roadmap. It also contains a contribution of the Terahertz Physics Group: a perspective article on “Spintronics with ultrashort terahertz pulses”.
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, [more...]
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, [more...]
Tom Seifert - laureate of the Highest Award of the Tiburtius Preis 2019
Feb 2020
Tom Seifert received the Highest Award of the 2019 Tiburtius Prize for his outstanding dissertation entitled “Spintronics with Terahertz Radiation: Probing and driving spins at highest frequencies”. Tom was supervised by Tobias Kampfrath.
Congratulations!
The Tiburtius Prize of Berlin’s Universities and Universities of Applied Sciences is named after Professor Joachim Tiburtius, who was Senator for National Education (“Senator für Volksbildung”) in Berlin from 1951 to 1963.
Congratulations!
The Tiburtius Prize of Berlin’s Universities and Universities of Applied Sciences is named after Professor Joachim Tiburtius, who was Senator for National Education (“Senator für Volksbildung”) in Berlin from 1951 to 1963.