Highly Efficient Non-relativistic Edelstein effect in p-wave magnets
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2024
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| author | Chakraborty, Atasi Hellenes, Anna Birk Jaeschke-Ubiergo, Rodrigo Jungwirth, Tomas Šmejkal, Libor Sinova, Jairo |
| author_facet | Chakraborty, Atasi Hellenes, Anna Birk Jaeschke-Ubiergo, Rodrigo Jungwirth, Tomas Šmejkal, Libor Sinova, Jairo |
| contents | The origin and efficiency of charge-to-spin conversion, known as the Edelstein effect (EE), has been typically linked to spin-orbit coupling mechanisms, which require materials with heavy elements within a non-centrosymmetric environment. Here we demonstrate that the high efficiency of spin-charge conversion can be achieved even without spin-orbit coupling in the recently identified coplanar p-wave magnets. The non-relativistic Edelstein effect (NREE) in these magnets exhibits a distinct phenomenology compared to the relativistic EE, characterized by a strongly anisotropic response and an out-of-plane polarized spin density resulting from the spin symmetries. We illustrate the NREE through minimal tight-binding models, allowing a direct comparison to different systems. Through first-principles calculations, we further identify the p-wave candidate material CeNiAsO as a high-efficiency NREE material, revealing a 25 times larger response than the maximally achieved relativistic EE and other reported NREE in non-collinear magnetic systems with broken time-reversal symmetry. This highlights the potential for efficient spin-charge conversion in p-wave magnetic systems. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_16378 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Highly Efficient Non-relativistic Edelstein effect in p-wave magnets Chakraborty, Atasi Hellenes, Anna Birk Jaeschke-Ubiergo, Rodrigo Jungwirth, Tomas Šmejkal, Libor Sinova, Jairo Mesoscale and Nanoscale Physics Materials Science The origin and efficiency of charge-to-spin conversion, known as the Edelstein effect (EE), has been typically linked to spin-orbit coupling mechanisms, which require materials with heavy elements within a non-centrosymmetric environment. Here we demonstrate that the high efficiency of spin-charge conversion can be achieved even without spin-orbit coupling in the recently identified coplanar p-wave magnets. The non-relativistic Edelstein effect (NREE) in these magnets exhibits a distinct phenomenology compared to the relativistic EE, characterized by a strongly anisotropic response and an out-of-plane polarized spin density resulting from the spin symmetries. We illustrate the NREE through minimal tight-binding models, allowing a direct comparison to different systems. Through first-principles calculations, we further identify the p-wave candidate material CeNiAsO as a high-efficiency NREE material, revealing a 25 times larger response than the maximally achieved relativistic EE and other reported NREE in non-collinear magnetic systems with broken time-reversal symmetry. This highlights the potential for efficient spin-charge conversion in p-wave magnetic systems. |
| title | Highly Efficient Non-relativistic Edelstein effect in p-wave magnets |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2411.16378 |