A5102943082- Magnetic properties of thin films
- Magneto-Optical Properties and Applications
- Multiferroics and related materials
- Magnetic Properties and Applications
- Advanced Condensed Matter Physics
- Atomic and Subatomic Physics Research
Johannes Gutenberg University Mainz
2024
Altermagnets are an emerging elementary class of collinear magnets. Unlike ferromagnets, their distinct crystal symmetries inhibit magnetization while, unlike antiferromagnets, they promote strong spin polarization in the band structure. The corresponding unconventional mechanism time-reversal symmetry breaking without electronic spectra has been regarded as a primary signature altermagnetism but not experimentally visualized to date. We directly observe structure altermagnetic RuO 2 by...
The recently discovered altermagnets exhibit collinear magnetic order with zero net magnetization but unconventional spin-polarized d/g/i-wave band structures, expanding the known paradigms of ferromagnets and antiferromagnets. In addition to novel current-driven electronic transport effects, time-reversal symmetry breaking in these systems also makes it possible obtain a spin response linearly polarized fields optical frequency domain. We show through ab-initio calculations prototypical...
In this study, we investigate the dynamic response of a Y$_3$Fe$_5$O$_{12}$ (YIG)/ Gd$_3$Fe$_5$O$_{12}$ (GdIG)/ Pt trilayer system by measurements ferromagnetic resonance (FMR) and pumped spin current detected inverse Hall effect. This offers unique opportunity to dynamics ferrimagnetic GdIG, close its compensation temperature. We show that our acts as highly tunable source. Our experimental results are supported micro-magnetic simulations. As in top layer is distinctly dominated GdIG layer,...