Non-relativistic linear Edelstein effect in helical EuIn2As2
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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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| _version_ | 1866912561022107648 |
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| author | Pari, Nayra A. Álvarez Jaeschke-Ubiergo, Rodrigo Chakraborty, Atasi Šmejkal, Libor Sinova, Jairo |
| author_facet | Pari, Nayra A. Álvarez Jaeschke-Ubiergo, Rodrigo Chakraborty, Atasi Šmejkal, Libor Sinova, Jairo |
| contents | Motivated by the ongoing interest in understanding the actual magnetic ground state of the promising axion insulator candidate EuIn2As2, we present here a spin symmetry analysis and ab-initio calculations, aiming to identify specific exchange-dominated physics that could offer insights into the current debate. We investigate two non-collinear coplanar magnetic orders reported in this compound: the helical and broken helical phases. Our symmetry analysis shows that magnetic-exchange alone results in the formation of an out-of-plane odd-wave order in momentum space with a single un-polarized nodal plane in both phases. Additionally, we identified an in-plane g-wave order that emerges exclusively in the broken helical phase, providing a distinguishing feature for this phase. Furthermore, we report a non-relativistic Edelstein effect with a distinct out-of-plane polarized spin density that dominates over spin-orbit coupling effects. Our ab-initio calculations reveal a significant contrast in the magnitude of this effect between both phases, which could serve as a means to identify the magnetic transition and distinguish them from other magnetic ground states proposed for this compound. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_10984 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Non-relativistic linear Edelstein effect in helical EuIn2As2 Pari, Nayra A. Álvarez Jaeschke-Ubiergo, Rodrigo Chakraborty, Atasi Šmejkal, Libor Sinova, Jairo Strongly Correlated Electrons Motivated by the ongoing interest in understanding the actual magnetic ground state of the promising axion insulator candidate EuIn2As2, we present here a spin symmetry analysis and ab-initio calculations, aiming to identify specific exchange-dominated physics that could offer insights into the current debate. We investigate two non-collinear coplanar magnetic orders reported in this compound: the helical and broken helical phases. Our symmetry analysis shows that magnetic-exchange alone results in the formation of an out-of-plane odd-wave order in momentum space with a single un-polarized nodal plane in both phases. Additionally, we identified an in-plane g-wave order that emerges exclusively in the broken helical phase, providing a distinguishing feature for this phase. Furthermore, we report a non-relativistic Edelstein effect with a distinct out-of-plane polarized spin density that dominates over spin-orbit coupling effects. Our ab-initio calculations reveal a significant contrast in the magnitude of this effect between both phases, which could serve as a means to identify the magnetic transition and distinguish them from other magnetic ground states proposed for this compound. |
| title | Non-relativistic linear Edelstein effect in helical EuIn2As2 |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2412.10984 |