Regensburg 2025 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 15: Poster I
MA 15.40: Poster
Dienstag, 18. März 2025, 10:00–12:30, P1
Electrical detection of spin currents in magnetic insulators — •Ankita Nayak1, Matthias Kronseder2, Nynke Vlietstra3, Hans Huebl3,4,5, Jeroen A. Heuver6, Beatriz Noheda6, Maxim Mostovoy6, Christian Back3,4, and Aisha Aqeel1,3,4 — 1University of Augsburg, 86135, Augsburg, Germany — 2Department of Physics, Regensburg University, 93053, Regensburg, Germany — 3Department of Physics, Technical University Munich, 85748 Garching b. München, Germany. — 4Munich Center for Quantum Science and Technology (MCQST), Schellingstr. 4, D-80799, München, Germany. — 5Walther -Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748, Garching, Germany, — 6Zernika Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.
We investigate the spin current-induced phenomena, such as spin Hall magnetoresistance and the spin Seebeck effect within Pt films deposited on a noncollinear magnet [1], CoCr2O4 (CCO). CCO is a spinel with a collinear ferrimagnetic state below Tc = 94 K and non-collinear magnetic phases at lower temperatures [2]. We investigated the SMR and the SSE at different temperatures (5K-300K) [2]. The temperature-dependent behavior of both SMR and SSE signals exhibits a noticeable variation correlated with different magnetic phases of CCO. This study offers insights into spin-current-driven phenomena, paving the way for potential spintronic applications. [1]. A. Aqeel, et al., Phys. Rev. B 103 (10), L100410 (2021). [2]. A. Aqeel, Phys. Rev. B 92 (22), 224410 (2015).
Keywords: Magnetic insulators; spin Seebeck effect; spin Hall magnetoresistance