التفاصيل البيبلوغرافية
| العنوان: |
Fermi-surface origin of skyrmion lattices in centrosymmetric rare-earth intermetallics |
| المؤلفون: |
Bouaziz, Juba, Mendive-Tapia, Eduardo, Blügel, Stefan, Staunton, Julie B. |
| سنة النشر: |
2022 |
| المجموعة: |
Condensed Matter |
| مصطلحات موضوعية: |
Condensed Matter - Materials Science |
| الوصف: |
We show from first-principles that barrel-shaped structures within the Fermi surface of the centrosymmetric intermetallic compounds GdRu$_2$Si$_2$ and Gd$_2$PdSi$_3$ give rise to Fermi surface nesting, which determines the strength and sign of quasi-two-dimensional Ruderman-Kittel-Kasuya-Yosida pairwise exchange interactions between the Gd moments. This is the principal mechanism leading to their helical single-$q$ spin-spiral ground states, providing transition temperatures and magnetic periods in good agreement with experiment. Using atomistic spin-dynamic simulations, we draw a direct line between the subtleties of the three-dimensional Fermi surface topology and the stabilization of a square skyrmion lattice in GdRu$_2$Si$_2$ at applied magnetic fields as observed in experiment. |
| نوع الوثيقة: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.128.157206 |
| URL الوصول: |
http://arxiv.org/abs/2204.01430 |
| رقم الانضمام: |
edsarx.2204.01430 |
| قاعدة البيانات: |
arXiv |