The research activities of the team aim at providing a better understanding of spin dependent transport and magnetization dynamics in ferromagnets at the nanoscale. From the theoretical point of view, state-of-the-art finite-element micromagnetic simulations are being carried out to investigate the static and dynamic properties of various nanoscale magnetic systems. From the experimental point of view, we investigate spin-polarized transport in two extreme situations: Tunneling through low-dimensional structures is probed by growing them into epitaxial tunnel junctions and measuring their low-temperature magnetoresistance. Long-range diffusive spin transport is probed by measuring the propagation of spin waves along ferromagnetic metal films and its modification by an electrical current (spin-wave Doppler shift).
Activités de l’équipe
Chercheurs et Enseignants :
Personnel technique :
Thésards et Post-doctorants :
A. Balaji, M. Kostylev, et M. Bailleul, « Scattering of a magnetostatic surface spin wave from a one-dimensional step potential in a ferromagnetic film », Journal of Applied Physics, vol. 125, no 16, 2019, doi:10.1063/1.5091806.
R. Hertel, S. Christophersen, et S. Boerm, « Large-scale magnetostatic field calculation in finite element micromagnetics with H-2-matrices », presented at: 9th Joint European Magnetic Symposia (JEMS), Mainz, Germany, 3-7 sept., 2018, in Journal of Magnetism and Magnetic Materials, 2019, vol. 477, p. 118‑123.
D. Cortés-Ortuño, M. Beg, V. Nehruji, L. Breth, R. Pepper, T. Kluyver, Gary Downing, T. Hesjedal, P. Hatton, T. Lancaster, R. Hertel, O. Hovorka, et H. Fangohr, « Proposal for a micromagnetic standard problem for materials with Dzyaloshinskii–Moriya interaction », New Journal of Physics, vol. 20, no 11, p. 113015, 2018, doi:10.1088/1367-2630/aaea1c.
F. Godel, C. Mény, B. Doudin, H. Majjad, J.-F. Dayen, et D. Halley, « Epitaxial ferromagnetic single clusters and smooth continuous layers on large area MgO/CVD graphene substrates », Materials Research Express, vol. 5, no 2, p. 025606, 2018, doi:10.1088/2053-1591/aaaff1.
N. Loayza, M. B. Jungfleisch, A. Hoffmann, M. Bailleul, et V. Vlaminck, « Fresnel diffraction of spin waves », Physical Review B, vol. 98, no 14, p. 144430, 2018, doi:10.1103/PhysRevB.98.144430.