# Extrinsic contribution to the anomalous Hall effect and Nernst effect in Fe 3 Co single-crystal thin films by Ir doping https://mdr.nims.go.jp/datasets/5274114a-e8ff-44e3-84d2-3a3dacf9da09 ## File - [Supplemental_Material_R_Toyama_et_al_FeCoIr_ANE_20240125.pdf](https://mdr.nims.go.jp/filesets/54eb0d25-cb5f-40ce-b12e-4d2e6f19f882/download) ([Detail](https://mdr.nims.go.jp/filesets/54eb0d25-cb5f-40ce-b12e-4d2e6f19f882.md)) - [R_Toyama_et_al_FeCoIr_ANE_20231224_Cleaned.pdf](https://mdr.nims.go.jp/filesets/16f95596-581f-4b62-b71e-23109dcd0f4f/download) ([Detail](https://mdr.nims.go.jp/filesets/16f95596-581f-4b62-b71e-23109dcd0f4f.md)) ## Id 5274114a-e8ff-44e3-84d2-3a3dacf9da09 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2024-08-09T07:53:10.505666Z ## Updated at 2024-08-30T23:31:07.199273Z ## Published at 2024-08-30T23:31:07.342357Z ## Doi https://doi.org/10.48505/nims.4715 ## First published url https://doi.org/10.1103/physrevb.109.054415 ## Date published 2024-02-12 ## Recorded date published 2024-2 ## Resource type journal_article ## Manuscript type accepted_manuscript ## Collection ## Title - title: Extrinsic contribution to the anomalous Hall effect and Nernst effect in Fe3Co single-crystal thin films by Ir doping title_type: original lang: en ## Description - description: We report the effect of Ir doping on the anomalous Hall effect (AHE) and anomalous Nernst effect (ANE) in Fe3Co single-crystal thin films. (Fe3Co)100–xIrx (x ≤ 12%) composition-spread thin films are fabricated on MgO(100) substrates by a combinatorial sputtering technique for a high-throughput and systematic characterization. From a structural analysis using X-ray diffraction, the films are grown epitaxially on the substrates and B2-ordered phase is detected from x = 7.3% to 12%. The compositional dependence of the AHE, magnetoresistance, ANE, and Seebeck effect is measured to obtain anomalous Hall resistivity (ρ_yx^A), longitudinal resistivity (ρ_xx), anomalous Nernst coefficient (S_ANE), and Seebeck coefficient (S_SE), respectively. From these transport measurements, we calculate anomalous Nernst conductivity (α_xy^A). A large enhancement of the ρ_yx^A value is observed upon Ir doping by a factor of ≈ 9.2 for x = 12% at 300 K. By employing a scaling analysis to the AHE results, extrinsic contribution is found to be increased after Ir doping in the low-Ir concentration regime, while intrinsic contribution becomes more dominant in the high-Ir concentration regime. On the other hand, unlike the ρ_yx^A, the S_ANE does not show significant compositional dependence. We find that AHE-related contribution is dominant to the S_ANE compared to the contribution from direct conversion of a temperature gradient to a transverse charge current by anomalous Nernst conductivity. We also find that the α_xy^A value sharply changes from a positive to negative value immediately after Ir doping, showing a negative maximum at x ≈ 1%, followed by a decrease in magnitude to almost zero for x = 12%. Based on the Mott’s relation and the scaling analysis of the AHE, we suggest a possible connection between the α_xy^A and the extrinsic contribution of the AHE. These experimental results and analysis will provide insights into the relationship between the AHE and ANE in ferromagnetic alloys upon heavy metal doping. description_type: abstract lang: und ## Creator - name: Ryo Toyama role: author orcid: https://orcid.org/0000-0002-7398-5803 organization: National Institute for Materials Science - name: Weinan Zhou role: author orcid: https://orcid.org/0000-0003-2946-9913 organization: National Institute for Materials Science - name: Yuya Sakuraba role: author orcid: https://orcid.org/0000-0003-4618-9550 organization: National Institute for Materials Science ## Contact agent ## Publisher organization: American Physical Society (APS) ## Managing organization ## Keyword - subject: anomalous Hall effect schema: not_defined - subject: anomalous Nernst effect schema: not_defined - subject: Seebeck effect schema: not_defined - subject: spin-orbit coupling schema: not_defined ## Rights - description: "©2024 American Physical Society" identifier: http://rightsstatements.org/vocab/InC/1.0/ ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo ## Journal - title: Physical Review B issn: '24699969' volume: '109' issue: '5' article_number: '054415' ## Conference ## Related item ## Funding - identifier: JPMJCR21O1 funder_name: Japan Science and Technology Corporation - identifier: JPMJER2201 funder_name: Japan Science and Technology Corporation - identifier: JPMXP1122715503 funder_name: Ministry of Education, Culture, Sports, Science and Technology - identifier: JP21H01608 funder_name: Japan Society for the Promotion of Science - identifier: JP22K20494 funder_name: Japan Society for the Promotion of Science ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: 54eb0d25-cb5f-40ce-b12e-4d2e6f19f882 filename: Supplemental_Material_R_Toyama_et_al_FeCoIr_ANE_20240125.pdf content_type: application/pdf size: 540732 md5: 13ac878041281f890c21eb1e0b83911a - id: 16f95596-581f-4b62-b71e-23109dcd0f4f filename: R_Toyama_et_al_FeCoIr_ANE_20231224_Cleaned.pdf content_type: application/pdf size: 1712763 md5: 6922444f0e87f61c7e21c557f65765a3 ## Thumbnail fileset_id: 16f95596-581f-4b62-b71e-23109dcd0f4f filename: R_Toyama_et_al_FeCoIr_ANE_20231224_Cleaned.pdf