Even-in-magnetic field part of transverse resistivity as a probe of magnetic transitions
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866913908301758464 |
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| author | Badura, Antonin Kriegner, Dominik Schmoranzerová, Eva Výborný, Karel Leiviskä, Miina Seeger, Rafael Lopes Baltz, Vincent Scheffler, Daniel Beckert, Sebastian Kounta, Ismaila Michez, Lisa Šmejkal, Libor Sinova, Jairo Goennenwein, Sebastian T. B. Železný, Jakub Reichlová, Helena |
| author_facet | Badura, Antonin Kriegner, Dominik Schmoranzerová, Eva Výborný, Karel Leiviskä, Miina Seeger, Rafael Lopes Baltz, Vincent Scheffler, Daniel Beckert, Sebastian Kounta, Ismaila Michez, Lisa Šmejkal, Libor Sinova, Jairo Goennenwein, Sebastian T. B. Železný, Jakub Reichlová, Helena |
| contents | The component of the resistivity tensor $ρ_{ij}$ corresponding to voltage transverse to both an applied current and a magnetic field can be separated into odd and even parts with respect to the applied magnetic field. The former contains information, for example, about the ordinary or anomalous Hall effect. The latter is often ascribed to experimental artefacts and ignored. Here, we show that upon suppressing these artefacts in carefully controlled experiments, useful information remains. We first investigate the well-explored ferromagnet CoFeB, where the even part of $ρ_{yx}$ contains a contribution from the anisotropic magnetoresistance, which we confirm by Stoner--Wohlfarth modelling. We then apply our approach to magnetotransport measurements of $\rm Mn_5Si_3$ thin films, which undergo a transition from non-collinear to an altermagnetic collinear state. In this material, the even part of the transverse signal is sizable only in the low-spin-symmetry phase below $\approx 80$~K. Transverse resistivity measurements thus offer a simple and readily available probe of magnetic order transitions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2311_14498 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Even-in-magnetic field part of transverse resistivity as a probe of magnetic transitions Badura, Antonin Kriegner, Dominik Schmoranzerová, Eva Výborný, Karel Leiviskä, Miina Seeger, Rafael Lopes Baltz, Vincent Scheffler, Daniel Beckert, Sebastian Kounta, Ismaila Michez, Lisa Šmejkal, Libor Sinova, Jairo Goennenwein, Sebastian T. B. Železný, Jakub Reichlová, Helena Mesoscale and Nanoscale Physics The component of the resistivity tensor $ρ_{ij}$ corresponding to voltage transverse to both an applied current and a magnetic field can be separated into odd and even parts with respect to the applied magnetic field. The former contains information, for example, about the ordinary or anomalous Hall effect. The latter is often ascribed to experimental artefacts and ignored. Here, we show that upon suppressing these artefacts in carefully controlled experiments, useful information remains. We first investigate the well-explored ferromagnet CoFeB, where the even part of $ρ_{yx}$ contains a contribution from the anisotropic magnetoresistance, which we confirm by Stoner--Wohlfarth modelling. We then apply our approach to magnetotransport measurements of $\rm Mn_5Si_3$ thin films, which undergo a transition from non-collinear to an altermagnetic collinear state. In this material, the even part of the transverse signal is sizable only in the low-spin-symmetry phase below $\approx 80$~K. Transverse resistivity measurements thus offer a simple and readily available probe of magnetic order transitions. |
| title | Even-in-magnetic field part of transverse resistivity as a probe of magnetic transitions |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2311.14498 |