C10 – Control of magnetic nanostructures by spin currents and thermal gradients
Funding period: 01/2012 – 12/2019
Principal investigator: Ulrich Nowak
Scientific staff: Martin Evers, Denise Hinzke, Stefan Gerlach, Ulrike Ritzmann, Frank Schlickeiser, Rocio Yanes-Diaz, Markus Weißenhofer
In a magnetic material temperature gradients do not solely cause phononic thermal transport but also a magnonic contribution. These magnonic spin currents can lead to spin transfer torque effects without a charge current. By means of multi-scale computer simulations we want to explore innovative ways to control magnetic textures with magnonic spin currents on a nanometre scale. The investigated magnetic textures will include domain walls in ferromagnets as well as ferrimagnets and antiferromagnets and chiral spin structures as, e. g., spin spirals and skyrmions, with promising properties for future applications.
For further information please also refer to the group website: AG Nowak
List of publications
2019
- M. Weißenhofer and U. Nowak
Orientation-dependent current-induced motion of skyrmions with various topologies
Phys. Rev. B 99, 224430 (2019) - DOI: 10.1103/PhysRevB.99.224430 - J. Zázvorka, F. Jakobs, D. Heinze, N. Keil, S. Kromin, S. Jaiswal, K. Litzius, G. Jakob, P. Virnau, D. Pinna, K. Everschor-Sitte, L. Rózsa, A. Donges, U. Nowak, and M. Kläui
Thermal skyrmion diffusion used in a reshuffler device
Nat. Nanotechnol. 14, 658 (2019) - DOI: 10.1038/s41565-019-0436-8 - M. Aßmann and U. Nowak
Spin-lattice relaxation beyond Gilbert damping
J. Magn. Magn. Mater. 469 (2019) - DOI: 10.1016/j.jmmm.2018.08.034
2018
- M. Evers, C. A. Müller, U. Nowak
Weak localization of magnons in chiral magnets
Phys. Rev. B 97, 184423 (2018) - DOI: 10.1103/PhysRevB.97.184423 - J. Cramer, F. Fuhrmann, U. Ritzmann, V. Gall, T. Niizeki, R. Ramos, Z. Qiu, D. Hou, T. Kikkawa, J. Sinova, U. Nowak, E. Saitoh, and M. Kläui
Magnon detection using a ferroic collinear multilayer spin valve
Nat. Comm. 9, 1089 (2018) - DOI: 10.1038/s41467-018-03485-5
University press release - J. Cramer, U. Ritzmann, B. Dong, S. Jaiswal, Z. Qiu, E. Saitoh, U. Nowak, and M. Kläui
Spin transport across antiferromagnets induced by the spin Seebeck effect
J. Phys. D. Appl. Phys. 51, 144004 (2018) - DOI: 10.1088/1361-6463/aab223
2017
- L. Rózsa, U. Atxitia, and U. Nowak
Temperature scaling of the Dzyaloshinsky-Moriya interaction in the spin wave spectrum
Phys. Rev. B 96, 094436 (2017) - DOI: 10.1103/PhysRevB.96.094436 - U. Atxitia, D. Hinzke, and U. Nowak
Fundamentals and applications of the Landau–Lifshitz–Bloch equation
J. Phys. D: Appl. Phys. 50, 033003 (2017) - DOI: 10.1088/1361-6463/50/3/033003 - U. Ritzmann, D. Hinzke and U. Nowak
Thermally induced magnon accumulation in two-sublattice magnets
Phys. Rev. B 95, 054411 (2017) - DOI: 10.1103/PhysRevB.95.054411 - L. Rózsa, K. Palotás, A. Deák, E. Simon, R. Yanes, L. Udvardi, L. Szunyogh, and U. Nowak
Formation and stability of metastable skyrmionic spin structures with various topologies in an ultrathin film
Phys. Rev. B 95, 094423 (2017) - DOI: 10.1103/PhysRevB.95.094423
2016
- S. Selzer, U. Atxitia, U. Ritzmann, D. Hinzke, and Ulrich Nowak
Inertia-free thermally driven domain-wall motion in antiferromagnets
Phys. Rev. Lett. 117, 107201 (2016) - DOI: 10.1103/PhysRevLett.117.107201 - L. Rózsa, A. Deák, E. Simon, R. Yanes, L. Udvardi, L. Szunyogh, and U. Nowak
Skyrmions with attractive interactions in an ultrathin magnetic film
Phys. Rev. Lett. 117, 157205 (2016) - DOI: 10.1103/PhysRevLett.117.157205
2015
- M. Stärk, F. Schlickeiser, D. Nissen, B. Hebler, P. Graus, D. Hinzke, E. Scheer, P. Leiderer, M. Fonin, M. Albrecht, U. Nowak, and Jo. Boneberg
Controlling the magnetic structure of Co/Pd thin films by direct laser interference patterning
Nanotechnology, Vol. 26, (2015) - DOI: 10.1088/0957-4484/26/20/205302/ - M. Evers, C. A. Müller, and U. Nowak
Spin-wave localization in disordered magnets
Phys. Rev. B 92, 014411 (2015) - DOI:10.1103/PhysRevB.92.014411 - A. Kehlberger, U. Ritzmann, D. Hinzke, E.-J. Guo, J. Cramer, G. Jakob, M. C. Onbasli, D. H. Kim, C. A. Ross, M. B. Jungfleisch, B. Hillebrands, U. Nowak, and M. Kläui
Length Scale of the Spin Seebeck Effect
Phys. Rev. Lett. 115, 096602 (2015) - DOI: 10.1103/PhysRevLett.115.096602 - U. Ritzmann, D. Hinzke, A. Kehlberger, E.-J. Guo, M. Kläui, and U. Nowak
Magnetic field control of the spin Seebeck effect
Phys. Rev. B 92, 174411 (2015) -DOI: 10.1103/PhysRevB.92.174411 - G. Hasselberg, R. Yanes, D. Hinzke, P. Sessi, M. Bode, L. Szunyogh, and U. Nowak
Thermal properties of a spin spiral: Manganese on tungsten(110)
Phys. Rev. B 91, 064402 (2015) - DOI: 10.1103/PhysRevB.91.064402
2014
- F. Schlickeiser, U. Ritzman, D. Hinzke, and U. Nowak
Role of entropy in domain wall motion in thermal gradients
Phys. Rev. Lett. 113, 097201 (2014) - DOI: 10.1103/PhysRevLett.113.097201 - U. Ritzman, D. Hinzke, and U. Nowak
Propagation of thermally induced magnonic spin currents
Physical Review B 89, 024409 (2014) - DOI: 10.1103/PhysRevB.89.024409
2012
- J. Heinen, O. Boulle, G. Malinowski, H. J. M. Sagten, B. Koopmans, C. Ulysse, G. Faini, D. Hinzke, and M. Kläui
Determination of the spin-torque non-adiabaticity in perpendicularly magnetized nanowires
J. Phys.: Condens. Matter 24, 024220 (2012) - DOI:10.1088/0953-8984/24/2/024220 - R. F. L. Evans, D. Hinzke, U. Atxitia, U. Nowak, R.W. Chantrell, and O. Chubykalo-Fesenko
Stochastic form of the Landau-Lifshitz-Bloch equation
Phys. Rev. B85, 014433 (2012) - DOI: 10.1103/PhysRevB.85.014433 - L. Balogh, K. Palotás, L. Udvardi, L. Szunyogh, and U. Nowak
Theoretical study of magnetic domain walls through a cobalt nanocontact
Phys. Rev. B86, 024406 (2012) - DOI: 10.1103/PhysRevB.86.024406
2011
- D. Hinzke and U. Nowak
Domain wall motion by the magnonic spin Seebeck effect
Phys. Rev. Lett. 107, 027205 (2011) - DOI: 10.1103/PhysRevLett.107.027205 - J. Heinen, D. Hinzke, O. Boulle, G. Malinowski, H. J. M. Sagten, B. Koopmans, C. Ulysse, G. Faini, and M. Kläui
Extraction of the spin-torque non-adiabaticity from thermally activated domain wall hopping
Appl. Phys. Lett. 99, 242501 (2011) - DOI: 10.1063/1.3663215 - Martin P. Magiera, Lothar Brendel, Dietrich E. Wolf, and U. Nowak
Spin waves cause nonlinear friction
Europhys. Lett. 95, 17010 (2011) - DOI: 10.1209/0295-5075/95/17010