Emergence of Giant Magnetic Chirality during Dimensionality Crossover of Magnetic Materials
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866913636936581120 |
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| author | Kim, Dae-Yun Nam, Yun-Seok Kim, Younghak Kim, Kyoung-Whan Go, Gyungchoon Lee, Seong-Hyub Moon, Joon Chang, Jun-Young Lee, Ah-Yeon Park, Seung-Young Min, Byoung-Chul Lee, Kyung-Jin Yang, Hyunsoo Kim, Duck-Ho Choe, Sug-Bong |
| author_facet | Kim, Dae-Yun Nam, Yun-Seok Kim, Younghak Kim, Kyoung-Whan Go, Gyungchoon Lee, Seong-Hyub Moon, Joon Chang, Jun-Young Lee, Ah-Yeon Park, Seung-Young Min, Byoung-Chul Lee, Kyung-Jin Yang, Hyunsoo Kim, Duck-Ho Choe, Sug-Bong |
| contents | Chirality, an intrinsic preference for a specific handedness, is a fundamental characteristic observed in nature. In magnetism, magnetic chirality arises from the anti-symmetric Dzyaloshinskii-Moriya interaction in competition with the symmetric Heisenberg exchange interaction. Traditionally, the anti-symmetric interaction has been considered minor relative to the symmetric interaction. In this study, we demonstrate an observation of giant magnetic chirality during the dimensionality crossover of magnetic materials from three-dimensional to two-dimensional. The ratio between the anti-symmetric and symmetric interactions exhibits a reversal in their dominance over this crossover, overturning the traditional consideration. This observation is validated theoretically using a non-local interaction model and tight-binding calculation with distinct pairing schemes for each exchange interaction throughout the crossover. Additional experiments investigating the asphericity of orbital moments corroborate the robustness of our findings. Our findings highlight the critical role of dimensionality in shaping magnetic chirality and offer strategies for engineering chiral magnet states with unprecedented strength, desired for the design of spintronic materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_02768 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Emergence of Giant Magnetic Chirality during Dimensionality Crossover of Magnetic Materials Kim, Dae-Yun Nam, Yun-Seok Kim, Younghak Kim, Kyoung-Whan Go, Gyungchoon Lee, Seong-Hyub Moon, Joon Chang, Jun-Young Lee, Ah-Yeon Park, Seung-Young Min, Byoung-Chul Lee, Kyung-Jin Yang, Hyunsoo Kim, Duck-Ho Choe, Sug-Bong Materials Science Applied Physics Chirality, an intrinsic preference for a specific handedness, is a fundamental characteristic observed in nature. In magnetism, magnetic chirality arises from the anti-symmetric Dzyaloshinskii-Moriya interaction in competition with the symmetric Heisenberg exchange interaction. Traditionally, the anti-symmetric interaction has been considered minor relative to the symmetric interaction. In this study, we demonstrate an observation of giant magnetic chirality during the dimensionality crossover of magnetic materials from three-dimensional to two-dimensional. The ratio between the anti-symmetric and symmetric interactions exhibits a reversal in their dominance over this crossover, overturning the traditional consideration. This observation is validated theoretically using a non-local interaction model and tight-binding calculation with distinct pairing schemes for each exchange interaction throughout the crossover. Additional experiments investigating the asphericity of orbital moments corroborate the robustness of our findings. Our findings highlight the critical role of dimensionality in shaping magnetic chirality and offer strategies for engineering chiral magnet states with unprecedented strength, desired for the design of spintronic materials. |
| title | Emergence of Giant Magnetic Chirality during Dimensionality Crossover of Magnetic Materials |
| topic | Materials Science Applied Physics |
| url | https://arxiv.org/abs/2501.02768 |