Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 20: Poster I

MA 20.29: Poster

Dienstag, 19. März 2024, 16:30–19:00, Poster A

Helical magnetic order in a polar Weyl semimetal RAlSi — •Ryota Nakano¹, Rinsuke Yamada¹, Sebastian Esser¹, Masaki Gen², Akiko Kikkawa², Yasujiro Taguchi², Maurice Colling³, Jan Masell^2,3, Masashi Tokunaga^2,4, Hajime Sagayama⁵, Hiroyuki Ohsumi⁶, Yoshikazu Tanaka⁶, Taka-hisa Arima^2,7, Yoshinori Tokura^1,2,8, and Max Hirschberger^1,2 — ¹Dep. of Applied Physics, University of Tokyo, Japan — ²RIKEN CEMS, Japan — ³Inst. of Theoretical Solid State Physics, Karlsruhe Institute of Technology, Germany — ⁴ISSP, University of Tokyo, Japan — ⁵Inst. of Materials Structure Science, KEK, Japan — ⁶RIKEN SPring-8, Japan — ⁷Dep. of Advanced Materials Science, University of Tokyo, Japan — ⁸Tokyo College, University of Tokyo, Japan

Recently, materials exhibiting both Weyl points and non-collinear or non-coplanar spin textures have been intensely studied. RAlSi/RAlGe (R = rare earth ion) is a promising platform, having Weyl nodes due to their non-centrosymmetric crystal structure, and showing versatile magnetic structures by substituting rare earth ions. Our recent study reveals large anisotropic magnetoresistance in RAlSi. In this presentation, we report various types of helimagnetic order in RAlSi by resonant X-ray scattering measurements, including polarization analysis of the scattered X-rays, at Photon Factory and SPring-8 in Japan.

Keywords: helimagnetism; rare earth magnetism; resonant X-ray scattering; RKKY ineraction