Article Spin hall magnetoresistance and spin seebeck effect in Pt|CoCr2O4 heterostructures

Aisha Aqeel (Munich Center for Quantum Science and Technology (MCQST),, Department of Physics, Technical University Munich) ; Matthias Kronseder (Department of Physics, Regensburg University) ; Nynke Vlietstra (Department of Physics, Technical University Munich) ; Hans Huebl (Munich Center for Quantum Science and Technology (MCQST), Department of Physics, Technical University Munich) ; Jeroen A. Heuver (Zernike Institute for Advanced Materials, University of Groningen) ; Beatriz Noheda (Zernike Institute for Advanced Materials, University of Groningen) ; Javier Herrero-Martín (ALBA Synchrotron Light Source) ; Eric Pellegrin (ALBA Synchrotron Light Source) ; Hari B. Vasili (ALBA Synchrotron Light Source) ; Maxim Mostovoy (Zernike Institute for Advanced Materials, University of Groningen) ; Christian Back (Munich Center for Quantum Science and Technology (MCQST), Department of Physics, Technical University Munich)

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Aisha Aqeel, Matthias Kronseder, Nynke Vlietstra, Hans Huebl, Jeroen A. Heuver, Beatriz Noheda, Javier Herrero-Martín, Eric Pellegrin, Hari B. Vasili, Maxim Mostovoy, Christian Back. Spin hall magnetoresistance and spin seebeck effect in Pt|CoCr2O4 heterostructures. Science and Technology of Advanced Materials. 2025, 26 (), 2457320 . https://doi.org/10.1080/14686996.2025.2457320

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(abstract)

This study delves into spin current-induced phenomena, such as spin-Hall magnetoresistance and the spin Seebeck effect within Pt films deposited on a noncollinear magnet, CoCr2O4 (CCO), particularly at low temperatures. Detailed investigation of the angular dependencies of spin Hall magnetoresistance (SMR) and spin Seebeck effect (SSE) was carried out. The temperature-dependent behavior of both SMR and SSE signals exhibits a discernible variation correlated with different magnetic phases of CCO. To distinguish the contributions arising from magnetic proximity effects, we conducted X-ray magnetic dichroism (XMCD) at the Pt-M3 edge. XMCD data from Pt/CCO heterostructures suggest that any magnetic moment associated with Pt, if present, is below the detection limit. This supports the notion that the observed signals primarily stem from SMR and SSE. This study offers insights into spin-current-driven phenomena, paving the way for potential spintronic applications.

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Keyword: Spintronics, Spin Seebeck effect, Spin-Hall magnetoresistance, spiral, non-collinear magnetic phases, Dzyloskinski Moriya interaction, Lockin detection technique

Date published: 2025-12-31

Publisher: Taylor&Francis

Journal:

  • Science and Technology of Advanced Materials (ISSN: 14686996) vol. 26 2457320

Funding:

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5323

First published URL: https://doi.org/10.1080/14686996.2025.2457320

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Updated at: 2025-07-16 16:17:06 +0900

Published on MDR: 2025-02-13 12:30:27 +0900

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