Nonreciprocal transport in a room-temperature chiral magnet
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912463912435712 |
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| author | Nakamura, Daisuke Lee, Mu-Kun Karube, Kosuke Mochizuki, Masahito Nagaosa, Naoto Tokura, Yoshinori Taguchi, Yasujiro |
| author_facet | Nakamura, Daisuke Lee, Mu-Kun Karube, Kosuke Mochizuki, Masahito Nagaosa, Naoto Tokura, Yoshinori Taguchi, Yasujiro |
| contents | Chiral magnets under broken time-reversal symmetry can give rise to rectification of moving electrons, called nonreciprocal transport. Several mechanisms, such as the spin-fluctuation-induced chiral scattering and asymmetry in the electronic band dispersion with and without the relativistic spin-orbit interaction, have been proposed, but clear identification as well as theoretical description of these different contributions are desired for full understanding of nonreciprocal transport phenomena. Here, we investigate a chiral magnet Co8Zn9Mn3 and find the nonreciprocal transport phenomena consisting of different contributions with distinct field- and temperature-dependence across the magnetic phase diagram over a wide temperature range including above room-temperature. We successfully separate the nonreciprocal resistivity into different components and identify their mechanisms as spin-fluctuation-induced chiral scattering and band asymmetry in a single material with the help of theoretical calculations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_02272 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nonreciprocal transport in a room-temperature chiral magnet Nakamura, Daisuke Lee, Mu-Kun Karube, Kosuke Mochizuki, Masahito Nagaosa, Naoto Tokura, Yoshinori Taguchi, Yasujiro Materials Science Chiral magnets under broken time-reversal symmetry can give rise to rectification of moving electrons, called nonreciprocal transport. Several mechanisms, such as the spin-fluctuation-induced chiral scattering and asymmetry in the electronic band dispersion with and without the relativistic spin-orbit interaction, have been proposed, but clear identification as well as theoretical description of these different contributions are desired for full understanding of nonreciprocal transport phenomena. Here, we investigate a chiral magnet Co8Zn9Mn3 and find the nonreciprocal transport phenomena consisting of different contributions with distinct field- and temperature-dependence across the magnetic phase diagram over a wide temperature range including above room-temperature. We successfully separate the nonreciprocal resistivity into different components and identify their mechanisms as spin-fluctuation-induced chiral scattering and band asymmetry in a single material with the help of theoretical calculations. |
| title | Nonreciprocal transport in a room-temperature chiral magnet |
| topic | Materials Science |
| url | https://arxiv.org/abs/2412.02272 |