News

A paper on “Reservoir Computing with Random Skyrmion Textures” has been published in Physical Review Applied. In this paper, the authors show that pinned random topological magnetic textures provide complex dynamical responses which can be exploited for reservoir computing. Simple patter recognition tasks are demonstrated explicitly. Detailed information: Reservoir Computing with Random Skyrmion Textures Daniele Pinna, George Bourianoff, Karin Everschor-Sitte Phys. Rev. Applied 14, 054020 (2020) ...

We welcome a new Bachelor of Science Candidate, Lucas Görzen, to the TWIST Group and wish him success with his project. Contact information: Lucas Görzen Email: lgoerzen@students.uni-mainz.de ...

Katharina Wolk joins the TWIST Group as a Research Assistant. We are looking forward to a successful collaboration. Contact information: Katharina Wolk Email: kwolk@students.uni-mainz.de ...

Robin Msiska joins the TWIST Group as a PhD Candidate. We are looking forward to a successful collaboration. Contact information: Robin Msiska Email: rmsiska@uni-mainz.de ...

Negin Hatami joins the TWIST Group as a Student Assistant. We are looking forward to a successful collaboration. Contact information: Negin Hatami Phone: +49 6131 39 - 27991 Fax: +49 6131 39 - 26375 Office: Staudingerweg 7 / 01-325 Email: nhatami@students.uni-mainz.de ...

Jake Love joins the TWIST Group as a PhD Candidate. We are looking forward to a successful collaboration. Contact information: Jake Love Email: jlove@uni-mainz.de ...

With the co-authorship of TWIST group leader Dr. Karin Everschor-Sitte, the Journal of Physics D – Applied Physics just published the 2020 Magnetism Roadmap. 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. Following the success and relevance of the 2014 and 2017 Magnetism Roadmap articles, this 2020 Magnetism Roadmap edition takes yet another timely look at newly relevant and ...

“The 2020 skyrmionics roadmap” has been published in Journal of Physics D: Applied Physics. The article provides a review of state-of-the-art experimental and theoretical results as well as an outlook discussing new research directions in this fascinating research field about the topological magnetic whirls.   Detailed information: The 2020 skyrmionics roadmap C Back, V Cros, H Ebert, K Everschor-Sitte, A Fert, M Garst, Tianping Ma, S Mankovsky, T L Monchesky, M Mostovoy, N Nagaosa, S S P Parkin, C Pfleiderer, N Reyren, A Rosch, Y Taguchi, Y Tokura, K von Bergmann and Jiadong Zang. Journal of Physics D: Applied Physics, Volume 53, Number 36 ...

A paper on “Spin-transfer torque driven motion, deformation, and instabilities of magnetic skyrmions at high currents” resulting from a collaboration between Dr. Jan Masell from the RIKEN Center of Emergent Matter Science in Japan and the postdoctoral researcher Davi R. Rodrigues, PhD Student Benjamin McKeever and the TWIST Group Leader Karin Everschor-Sitte, has been published in Physical Review B. In this paper, they obtained a complete phase space for spin transfer torque driven skyrmions. They report a set of parameters at which skyrmions are stable even at high currents, where skyrmions take a shooting star-like shape instead of the radially symmetric configuration. Moreover, the authors also describe a set of parameters where the skyrmions tends to elongate indefinitely, becoming unstable. These results are noteworthy for the realization of spintronic devices that require fast moving skyrmions. Detailed information: Spin-transfer torque driven motion, deformation, and instabilities of magnetic skyrmions at high currents ...

A paper on “Facilitating domain wall injection in magnetic nanowires by electrical means” by the postdoctoral researcher Davi R. Rodrigues, former Master Student Nils Sommer and the Group Leader Karin Everschor-Sitte, all from the TWIST Group has been published in Physical Review B. In this paper, they investigated means to facilitate the injection of domain walls in ferromagnetic nanowires by electrical means. They considered different interactions between spin currents and the magnetic texture, such as spin-transfer torques and spin-orbit torques, including damping terms, as well as the influence of the Dzyaloshinskii-Moriya chiral interaction. The study was carried with analytical calculations and micromagnetic simulations. Among the main results, they showed that chiral interactions can significantly reduce the required current to inject domain walls and described of single domain wall injection by spin-orbit torques. Furthermore, in this paper they studied the interaction between pairs of chiral domain walls and demonstrated that it ...