Open positions for PhD, Master and Bachelor theses and Postdoctoral positions at the Institute of Physics, Solid State Physics:
Our group works on the area of spintronics and nano-electronics. We work as well on other aspects of solid state theory, with a view towards multi-disciplinary approaches. Our group is very dynamic and we try to create an environment with diverse characters and expertise in order to attain a much more powerful approach to the physical challenges that we try to solve.
Libor Smejkal has predicted a new type of phenomena in the family of spontaneous Hall effects connected to a new type of exchange splitting that depends on the momentum of the electron quasiparticle.
Abstract: Electrons, commonly moving along the applied electric field, acquire in certain magnets a dissipationless transverse velocity. This spontaneous Hall effect, found more than a century ago, has been understood in terms of the time-reversal symmetry breaking by the internal spin structure of a ferromagnetic, noncolinear antiferromagnetic, or skyrmionic form. Here, we identify previously overlooked robust Hall effect mechanism arising from collinear antiferromagnetism combined with nonmagnetic atoms at noncentrosymmetric positions. We predict a large magnitude of this crystal Hall effect in a room temperature collinear antiferromagnet RuO2 and catalog, based on symmetry rules, extensive families of material candidates. We show that the crystal Hall effect is accompanied by the possibility to control its sign by the crystal chirality. We illustrate that accounting for the full magnetization density distribution instead of the simplified spin structure sheds new light on symmetry breaking phenomena in magnets and opens an alternative avenue toward low-dissipation nanoelectronics.
The group would like to congratulate Bertrand, who will start in October his new position at Chercheur Qualifié at the Fond National de Recherche Scientifique (FNRS) in Belgium. He will be associated with the University of Liège in the Quantum Materials (Q-mat) research unit, which is part of the Complex and Entangled Systems from Atoms to Materials department (CESAM). He will be establishing and building a group focusing on developing computational methods and researching magnetism and metals looking at skyrmion physics, transport and superconductivity.
Sinova and collaborators have published a large review of spin-orbit torques in ferromagnetic and antiferromagnetic systems in Review of Modern Physics. Link here.
joins the TWIST & INSPIRE Group as a PhD Candidate.
We are looking forward to a successful collaboration.
The "JGU Magazine" publishes an article about Prof. Jairo Sinova in which readers get an insight of Jairos scientific career, the research field of spintronics and his love for Mainz. Further he talks about the Spin Phenomena Interdisciplinary Center (SPICE) and the Interdisciplinary Spintronics Research Group (INSPIRE) which he built up and leads at the Institute for Physics at the Johannes Gutenberg University in Mainz.
To read the full article please click here.
The 'Allgemeine Zeitung' published an article about the Joint European Magnetism Symposia (JEMS) 2018 which took place from the 3rd until the 7th September at the Rheingoldhalle in Mainz.
To read the full article click here.
FOCUS Online announces the „Joint European Magnetic Symposia“ - JEMS, which is taking place in Mainz in the week of September 03 - 07, 2018.
To read the full article, click here.
We have published an Article on Terahertz electrical writing speed in an antiferromagnetic memory in Science Advances.
K. Olejnik, T. Seifert, Z. Kaspar, V. Novak, P. Wadley, R.P. Campion, M. Baumgartner, P. Gambardella, P. Nemec, J. Wunderlich, J. Sinova, M. Muller, T. Kampfrath, T. Jungwirth
THz electrical writing speed in an antiferromagnetic memory
arXiv:1711.08444; accepted for publication in Science Advances
Pressrelease in German
We are very proud to announce that Uday Chopra (AK Sinova, JGU) is among the new members of the Gutenberg Academy for Young Researchers. Congratulations! He was admitted to the academy in a ceremony on April 23 together with 11 other PhD students from all scientific disciplines at JGU. The academy brings together up to 25 of JGU's best PhD students and artists and provides them with the chance to participate in an interdisciplinary exchange of ideas at the highest intellectual level.