Large spontaneous Hall effect with flexible domain control in an antiferromagnetic material TaMnP
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913620307214336 |
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| author | Kotegawa, Hisashi Nakamura, Akira Huyen, Vu Thi Ngoc Arai, Yuki Tou, Hideki Sugawara, Hitoshi Hayashi, Junichi Takeda, Keiki Tabata, Chihiro Kaneko, Koji Kodama, Katsuaki Suzuki, Michi-To |
| author_facet | Kotegawa, Hisashi Nakamura, Akira Huyen, Vu Thi Ngoc Arai, Yuki Tou, Hideki Sugawara, Hitoshi Hayashi, Junichi Takeda, Keiki Tabata, Chihiro Kaneko, Koji Kodama, Katsuaki Suzuki, Michi-To |
| contents | Antiferromagnets without parity-time ($\mathcal{PT}$) symmetry offer novel perspectives in the field of functional magnetic materials. Among them, those with ferromagnetic-like responses are promising candidates for future applications such as antiferromagnetic (AF) memory; however, examples showing large effects are extremely limited. In this study, we show that the orthorhombic system TaMnP exhibits a large anomalous Hall conductivity (AHC) $\sim360-370$ $Ω^{-1}$cm$^{-1}$ in spite of the small net magnetization $\sim10^{-2}$ $μ_B$/Mn. Our neutron scattering experiment and the observation of the AH effect indicated that a magnetic structure of TaMnP was dominated by an AF component represented by $B_{3g}$ with the propagation vector $q=0$. Furthermore, we confirmed that the obtained AHC is among the largest observed in AF materials at zero fields. Additionally, our first-principles calculations revealed that the spin-orbit interaction originating in the nonmagnetic Ta-$5d$ electrons significantly contributes to enhancing Berry curvatures in the momentum space. We found that the magnetic fields along all the crystal axes triggered the AF domain switching, indicating the possibility of controlling the AF domain using the small net magnetization, which is symmetrically different. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_04064 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Large spontaneous Hall effect with flexible domain control in an antiferromagnetic material TaMnP Kotegawa, Hisashi Nakamura, Akira Huyen, Vu Thi Ngoc Arai, Yuki Tou, Hideki Sugawara, Hitoshi Hayashi, Junichi Takeda, Keiki Tabata, Chihiro Kaneko, Koji Kodama, Katsuaki Suzuki, Michi-To Strongly Correlated Electrons Materials Science Antiferromagnets without parity-time ($\mathcal{PT}$) symmetry offer novel perspectives in the field of functional magnetic materials. Among them, those with ferromagnetic-like responses are promising candidates for future applications such as antiferromagnetic (AF) memory; however, examples showing large effects are extremely limited. In this study, we show that the orthorhombic system TaMnP exhibits a large anomalous Hall conductivity (AHC) $\sim360-370$ $Ω^{-1}$cm$^{-1}$ in spite of the small net magnetization $\sim10^{-2}$ $μ_B$/Mn. Our neutron scattering experiment and the observation of the AH effect indicated that a magnetic structure of TaMnP was dominated by an AF component represented by $B_{3g}$ with the propagation vector $q=0$. Furthermore, we confirmed that the obtained AHC is among the largest observed in AF materials at zero fields. Additionally, our first-principles calculations revealed that the spin-orbit interaction originating in the nonmagnetic Ta-$5d$ electrons significantly contributes to enhancing Berry curvatures in the momentum space. We found that the magnetic fields along all the crystal axes triggered the AF domain switching, indicating the possibility of controlling the AF domain using the small net magnetization, which is symmetrically different. |
| title | Large spontaneous Hall effect with flexible domain control in an antiferromagnetic material TaMnP |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2409.04064 |