Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866911891537788928 |
|---|---|
| author | Hirschberger, Max Szigeti, Bertalan G. Hemmida, Mamoun Hirschmann, Moritz M. Esser, Sebastian Ohsumi, Hiroyuki Tanaka, Yoshikazu Spitz, Leonie Gao, Shang Kolincio, Kamil K. Sagayama, Hajime Nakao, Hironori Yamasaki, Yuichi Forró, László von Nidda, Hans-Albrecht Krug Kézsmárki, István Arima, Taka-hisa Tokura, Yoshinori |
| author_facet | Hirschberger, Max Szigeti, Bertalan G. Hemmida, Mamoun Hirschmann, Moritz M. Esser, Sebastian Ohsumi, Hiroyuki Tanaka, Yoshikazu Spitz, Leonie Gao, Shang Kolincio, Kamil K. Sagayama, Hajime Nakao, Hironori Yamasaki, Yuichi Forró, László von Nidda, Hans-Albrecht Krug Kézsmárki, István Arima, Taka-hisa Tokura, Yoshinori |
| contents | Skyrmion lattices (SkL) in centrosymmetric materials typically have a magnetic period on the nanometer-scale, so that the coupling between magnetic superstructures and the underlying crystal lattice cannot be neglected. Here, we reveal the commensurate locking of a SkL to the atomic lattice in Gd$_3$Ru$_4$Al$_{12}$ via high-resolution resonant elastic x-ray scattering (REXS). Weak easy-plane magnetic anisotropy, demonstrated here by a combination of ferromagnetic resonance and REXS, penalizes placing a skyrmion core on a site of the atomic lattice. Under these conditions, a commensurate SkL, locked to the crystal lattice, is stable at finite temperatures -- but gives way to a competing incommensurate ground state upon cooling. We discuss the role of Umklapp-terms in the Hamiltonian for the formation of this lattice-locked state, its magnetic space group, the role of slight discommensurations, or (line) defects in the magnetic texture, and contrast our findings with the case of SkLs in noncentrosymmetric material platforms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_05082 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet Hirschberger, Max Szigeti, Bertalan G. Hemmida, Mamoun Hirschmann, Moritz M. Esser, Sebastian Ohsumi, Hiroyuki Tanaka, Yoshikazu Spitz, Leonie Gao, Shang Kolincio, Kamil K. Sagayama, Hajime Nakao, Hironori Yamasaki, Yuichi Forró, László von Nidda, Hans-Albrecht Krug Kézsmárki, István Arima, Taka-hisa Tokura, Yoshinori Strongly Correlated Electrons Skyrmion lattices (SkL) in centrosymmetric materials typically have a magnetic period on the nanometer-scale, so that the coupling between magnetic superstructures and the underlying crystal lattice cannot be neglected. Here, we reveal the commensurate locking of a SkL to the atomic lattice in Gd$_3$Ru$_4$Al$_{12}$ via high-resolution resonant elastic x-ray scattering (REXS). Weak easy-plane magnetic anisotropy, demonstrated here by a combination of ferromagnetic resonance and REXS, penalizes placing a skyrmion core on a site of the atomic lattice. Under these conditions, a commensurate SkL, locked to the crystal lattice, is stable at finite temperatures -- but gives way to a competing incommensurate ground state upon cooling. We discuss the role of Umklapp-terms in the Hamiltonian for the formation of this lattice-locked state, its magnetic space group, the role of slight discommensurations, or (line) defects in the magnetic texture, and contrast our findings with the case of SkLs in noncentrosymmetric material platforms. |
| title | Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2403.05082 |