Frustration of harmonic and solitonic helimagnetism on the body-centered tetragonal lattice of GdAlSi
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arXiv
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| Autores principales: | , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866917513762177024 |
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| author | Nakano, Ryota Yamada, Rinsuke Utesov, Oleg I. Gen, Masaki Kikkawa, Akiko Sagayama, Hajime Nakao, Hironori Tokunaga, Masashi Arima, Taka-hisa Tokura, Yoshinori Kim, Se Kwon Hirschberger, Max |
| author_facet | Nakano, Ryota Yamada, Rinsuke Utesov, Oleg I. Gen, Masaki Kikkawa, Akiko Sagayama, Hajime Nakao, Hironori Tokunaga, Masashi Arima, Taka-hisa Tokura, Yoshinori Kim, Se Kwon Hirschberger, Max |
| contents | The triangular lattice antiferromagnet (TLAF) with nearest-neighbor exchange interaction is a model platform in the field of frustrated magnetism. Here, anharmonic (`up-up-down') and harmonic (`120 degree') magnetic states compete, because the fundamental helimagnetic wave and its higher harmonic are degenerate in energy. We show that a body-centered tetragonal lattice (BCTL) can realize a similar frustration of harmonic and anharmonic helimagnetic states, and that the tetragonal magnetic Weyl semimetal GdAlSi realizes this scenario. In an applied magnetic field, resonant elastic X-ray scattering reveals a competition of harmonic cycloidal and solitonic double-Q states, well consistent with mean-field calculations. Our work provides a new paradigm for frustration physics in BCTL materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_07294 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Frustration of harmonic and solitonic helimagnetism on the body-centered tetragonal lattice of GdAlSi Nakano, Ryota Yamada, Rinsuke Utesov, Oleg I. Gen, Masaki Kikkawa, Akiko Sagayama, Hajime Nakao, Hironori Tokunaga, Masashi Arima, Taka-hisa Tokura, Yoshinori Kim, Se Kwon Hirschberger, Max Strongly Correlated Electrons Materials Science The triangular lattice antiferromagnet (TLAF) with nearest-neighbor exchange interaction is a model platform in the field of frustrated magnetism. Here, anharmonic (`up-up-down') and harmonic (`120 degree') magnetic states compete, because the fundamental helimagnetic wave and its higher harmonic are degenerate in energy. We show that a body-centered tetragonal lattice (BCTL) can realize a similar frustration of harmonic and anharmonic helimagnetic states, and that the tetragonal magnetic Weyl semimetal GdAlSi realizes this scenario. In an applied magnetic field, resonant elastic X-ray scattering reveals a competition of harmonic cycloidal and solitonic double-Q states, well consistent with mean-field calculations. Our work provides a new paradigm for frustration physics in BCTL materials. |
| title | Frustration of harmonic and solitonic helimagnetism on the body-centered tetragonal lattice of GdAlSi |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2605.07294 |