Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 8: Magnonics
MA 8.2: Vortrag
Montag, 1. April 2019, 15:15–15:30, H52
Efficient Magnonic Spin Transport in Insulating Antiferromagnetic Thin Films — •Andrew Ross1,2, Romain Lebrun1, Scott Bender3, Joel Cramer1,2, Asaf Kay4, David Ellis4, Daniel Grave4, Lorenzo Baldrati1, Alireza Qaiumzedah5, Arne Brataas5, Anvar Rothschild4, Rembert Duine3,5,6, and Mathias Kläui1,2,5 — 1Johannes Gutenberg University Mainz, Germany — 2Graduate School of Excellence MAINZ, Germany — 3Utrecht University, The Netherlands — 4Technion-Israel Institute of Technology, Israel — 5QuSpin, Norwegian University of Science and Technology, Norway — 6Eindhoven University of Technology, The Netherlands
Antiferromagnet (AF) insulators benefit from unparalleled stability in external fields, magnetisation dynamics at THz frequencies, a lack of stray fields and have been shown to exhibit low Gilbert damping, which enables efficient long-range propagation of magnons[1] as recently demonstrated[2]. Here we investigate the underlying mechanisms behind magnon transport in AF thin films. We find that efficient spin transport is possible across μm distances in nm thick thin films, contrary to previous studies reporting only nm spin-diffusion lengths in AF thin films[3]. By XMLD imaging of the AF domains we demonstrate the role of magnetic correlation in the propagation of magnons. We achieve efficient control over the AF system and establish the possibility to propagate long-distance spin-waves in AF thin films. [1] Chumak et al., Nature Phys. 11, 6 (2015), [2] Lebrun et al., Nature 561 (2018), [3] Cramer et al., J. Phys. D: Appl. Phys. 51, 14 (2018)