Spin Hall magnetoresistance and spin Seebeck effect in Pt |CoCr <sub>2</sub> O <sub>4</sub> heterostructures
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, CoCr <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi> </mml:mi> <mml:mn>2</mml:mn></mml:msub> </mml:math> O <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi> </mml:mi> <mml:mn>4</mml:mn></mml:msub> </mml:math> (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-M <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi> </mml:mi> <mml:mn>3</mml:mn></mml:msub> </mml:math> 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.
Authors
- E. Pellegrin (ORCID: https://orcid.org/0000-0002-1648-0331)
- Beatriz Noheda (ORCID: https://orcid.org/0000-0001-8456-2286)
- Hans Huebl (ORCID: https://orcid.org/0000-0003-3023-5209)
- Nynke Vlietstra
- Maxim Mostovoy (ORCID: https://orcid.org/0000-0002-7958-4883)
- M. Kronseder (ORCID: https://orcid.org/0000-0002-0103-4566)
- Aisha Aqeel (ORCID: https://orcid.org/0000-0003-1169-483X)
- Javier Herrero‐Martín (ORCID: https://orcid.org/0000-0003-1986-8128)
- V. Hari Babu (ORCID: https://orcid.org/0000-0002-3356-6436)
- J. A. Heuver
- C. H. Back (ORCID: https://orcid.org/0000-0003-3840-0993)
Institutions
- Bavarian Academy of Sciences and Humanities (DE)
- University of Groningen (NL)
- University of Augsburg (DE)
- ALBA Synchrotron (Spain) (ES)
- Munich Center for Quantum Science and Technology (DE)
- University of Regensburg (DE)
- Technical University of Munich (DE)
Publication Details
- Journal
- Science and Technology of Advanced Materials
- Published
- 2025-02-03
- DOI
- https://doi.org/10.1080/14686996.2025.2457320
- Citations
- 1
- Primary Topic
- Multiferroics and related materials
- Type
- article
- Field-Weighted Citation Impact
- 0.43
Funders
- Deutsche Forschungsgemeinschaft
- Munich Center for Quantum Science and Technology