Contact

Dr. Helmut Schultheiß

Head Magnonics
Emmy Noether group leader
h.schultheisshzdr.de
Phone: +49 351 260 3243

Magnonics: Spin waves bridging Spintronics and Photonics

Emmy Noether research group of Dr. Helmut Schultheiß

Within this project we investigate the fundamental connections between spin waves, spin polarized electrons and photons, combining the three recently emerged research directions of magnonics, spintronics and photonics. This research is driven by the demand for new concepts, technologies and materials for information processing since, on one side, electronics is reaching its physical limit of speed due to waste heat generation and, on the other side, photonics lacks fast, electronic control on small length scales. Spin waves, being the fundamental dynamic excitations of ferromagnets with frequencies in the gigahertz to terahertz regime, offer the unique opportunity to merge the best aspects of spintronics and photonics opening new pathways for information processing. You can find a more detailed overview of our current research topics here.

Our methods cover for example time- and phase-resolved Brillouin light scattering microscopy (TR-µBLS), time-resolved magneto-optical Kerr microscopy (TR-µMOKE), a femtosecond-laser system, electrical detection via the (inverse) spin Hall effect (ISHE) as well as micromagnetic simulation.

Joining our group

Group Foto Magnonics ©Copyright: Dr. Schultheiß, Helmut — Group Foto Magnonics

Foto: Helmut Schultheiß

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If you are interested in joining our group (i.e. for a Bachelor, Master or PhD Thesis, as a research assistant or postdoc) see our open positions section for possible topics or directly contact Dr. Helmut Schultheiß. Exemplary topics are:

Interaction of spin waves and spin polarized currents

Using the spin degree of electrons and coherent transport of spin information is one of the grand challenges of condensed matter physics. Spin wave, which are also called magnons, are the fundamental exciation quanta of a ferromagnet and can interact with spin polarized currents. This interaction can be studied on a nanometer lengthscale using magneto-optical techniques such as Kerr-effect and Brillouin light scattering microscopy as well as electrical measurements based on the (inverse) spin Hall effect.

Magneto-Plasmonik

Plasmons are electromagnetic waves propagating along metal-dielectric interfaces. Plasmons as well as magnons are not only interesting from a physicists point of view but are also promising candidates for future information processing technologies superseeding conventional CMOS devices. During a master or bachelor thesis the candidate will invesigate the interaction between magnons and plasmons in metallic/ferromagnetic hybrid devices.

Recent publications

See a full list here.

2020

Nonlinear losses in magnon transport due to four-magnon scattering

Hula, T.; Schultheiß, K.; Buzdakov, A.; Körber, L.; Bejarano, M.; Flacke, L.; Liensberger, L.; Weiler, M.; Shaw, J. M.; Nembach, H. T.; Faßbender, J.; Schultheiß, H.

Applied Physics Letters 117(2020)4, 042404

Bipolar spin Hall nano-oscillators

Hache, T.; Li, Y.; Weinhold, T.; Scheumann, B.; Trindade Goncalves, F. J.; Hellwig, O.; Faßbender, J.; Schultheiß, H.

Related publications

Bipolar spin Hall nano-oscillators (Id 30829) HZDR-primary research data are used by this (Id 30822) publication

Applied Physics Letters 116(2020), 192405

Freestanding and positionable microwave-antenna device for magneto-optical spectroscopy experiments

Hache, T.; Vaňatka, M.; Flajšman, L.; Weinhold, T.; Hula, T.; Ciubotariu, O.; Albrecht, M.; Arkook, B.; Barsukov, I.; Fallarino, L.; Hellwig, O.; Faßbender, J.; Urbánek, M.; Schultheiß, H.

Poster
DPG-Frühjahrstagung der Sektion Kondensierte Materie, 31.03.-05.04.2019, Universität Regensburg, Deutschland
Physical Review Applied 13(2020)5, 054009

2019

Imaging and writing magnetic domains in the non-collinear antiferromagnet Mn₃Sn

Reichlova, H.; Janda, T.; Godinho, J.; Markou, A.; Kriegner, D.; Schlitz, R.; Zelezny, J.; Soban, Z.; Bejarano, M.; Schultheiß, H.; Nemec, P.; Jungwirth, T.; Felser, C.; Wunderlich, J.; Goennenwein, S.

Nature Communications 10(2019), 5459

Magnetization Dynamics of an Individual Single-Crystalline Fe-Filled Carbon Nanotube

Lenz, K.; Narkowicz, R.; Wagner, K.; Reiche, C. F.; Körner, J.; Schneider, T.; Kákay, A.; Schultheiss, H.; Suter, D.; Büchner, B.; Fassbender, J.; Mühl, T.; Lindner, J.

Small 15(2019)49, 1904315

High spin-wave propagation length consistent with low damping in a metallic ferromagnet

Flacke, L.; Liensberger, L.; Althammer, M.; Huebl, H.; Geprägs, S.; Schultheiß, K.; Buzdakov, A.; Hula, T.; Schultheiß, H.; Edwards, E. R. J.; Nembach, H. T.; Shaw, J. M.; Gross, R.; Weiler, M.

Applied Physics Letters 115(2019)12, 122402

Nonlinear ferromagnetic resonance in the presence of 3-magnon scattering in magnetic nanostructures

Slobodianiuk, D. V.; Melkov, G. A.; Schultheiß, K.; Schultheiß, H.; Verba, R. V.

IEEE Magnetics Letters 10(2019), 6103405

Combined frequency and time domain measurements on injection-locked, constriction-based spin Hall nano-oscillators

Hache, T.; Weinhold, T.; Schultheiss, K.; Stigloher, J.; Vilsmeier, F.; Back, C.; Arekapudi, S. S. P. K.; Hellwig, O.; Fassbender, J.; Schultheiss, H.

Applied Physics Letters 114(2019)10, 102403

Domain wall-based spin-Hall nano-oscillators

Sato, N.; Schultheiß, K.; Körber, L.; Puwenberg, N.; Mühl, T.; Awad, A. A.; Arekapudi, S. S. P. K.; Hellwig, O.; Faßbender, J.; Schultheiß, H.

Physical Review Letters 123(2019)5, 057204

Downloads:

Original PDF 1,6 MB Secondary publication

Excitation of whispering gallery magnons in a magnetic vortex

Schultheiss, K.; Verba, R.; Wehrmann, F.; Wagner, K.; Körber, L.; Hula, T.; Hache, T.; Kákay, A.; Awad, A. A.; Tiberkevich, V.; Slavin, A. N.; Fassbender, J.; Schultheiss, H.

Physical Review Letters 122(2019), 097202
Invited lecture (Conferences)
International Conference on Magnetism, 19.07.2018, San Francisco, USA
Invited lecture (Conferences)
APS March Meeting, 04.03.2019, Boston, USA
Poster
Wilhelm und Else Heraeus-Seminar “Spin Based Information Processing”, 08.01.2019, Bad Honnef, Deutschland
Lecture (Conference)
Joint European Magnetic Symposia (JEMS), 04.09.2018, Mainz, Deutschland
Poster
Magnonics 2019, 28.07.2019, Carovigno, Italien
Invited lecture (Conferences)
Magnetics and Optics Research International Symposium, 24.06.2019, Prague, Czech Republic
Invited lecture (Conferences)
Conference on Magnetism and Magnetic Materials (MMM), 06.11.2019, Las Vegas, USA

Downloads:

Original PDF 1,7 MB Secondary publication

2018

Injection locking of multiple auto-oscillation modes in a tapered nanowire spin Hall oscillator

Wagner, K.; Smith, A.; Hache, T.; Chen, J.-R.; Yang, L.; Montoya, E.; Schultheiss, K.; Lindner, J.; Fassbender, J.; Krivorotov, I.; Schultheiss, H.

Scientific Reports 8(2018), 16040

Frequency linewidth and decay length of spin waves in curved magnetic membranes

Otalora, J. A.; Kákay, A.; Lindner, J.; Schultheiss, H.; Thomas, A.; Fassbender, J.; Nielsch, K.

Physical Review B 98(2018)1, 014403

Downloads:

Original PDF 1003 kB Secondary publication

Interplay between magnetic domain patterning and anisotropic magnetoresistance probed by magnetooptics

Osten, J.; Lenz, K.; Schultheiss, H.; Lindner, J.; McCord, J.; Fassbender, J.

Physical Review B 97(2018), 014415

Downloads:

Original PDF 1,3 MB Secondary publication