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Chiral and flat-band magnetic quasiparticles in ferromagnetic and metallic kagome layers.
Riberolles, S X M; Slade, Tyler J; Han, Tianxiong; Li, Bing; Abernathy, D L; Canfield, P C; Ueland, B G; Orth, P P; Ke, Liqin; McQueeney, R J.
Afiliación
  • Riberolles SXM; Ames National Laboratory, Ames, IA, 50011, USA.
  • Slade TJ; Ames National Laboratory, Ames, IA, 50011, USA.
  • Han T; Ames National Laboratory, Ames, IA, 50011, USA.
  • Li B; Department of Physics and Astronomy, Iowa State University, Ames, IA, 50011, USA.
  • Abernathy DL; Ames National Laboratory, Ames, IA, 50011, USA.
  • Canfield PC; Department of Physics and Astronomy, Iowa State University, Ames, IA, 50011, USA.
  • Ueland BG; Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
  • Orth PP; Ames National Laboratory, Ames, IA, 50011, USA.
  • Ke L; Department of Physics and Astronomy, Iowa State University, Ames, IA, 50011, USA.
  • McQueeney RJ; Ames National Laboratory, Ames, IA, 50011, USA.
Nat Commun ; 15(1): 1592, 2024 Feb 21.
Article en En | MEDLINE | ID: mdl-38383472
ABSTRACT
Magnetic kagome metals are a promising platform to develop unique quantum transport and optical phenomena caused by the interplay between topological electronic bands, strong correlations, and magnetic order. This interplay may result in exotic quasiparticles that describe the coupled electronic and spin excitations on the frustrated kagome lattice. Here, we observe novel elementary magnetic excitations within the ferromagnetic Mn kagome layers in TbMn6Sn6 using inelastic neutron scattering. We observe sharp, collective acoustic magnons and identify flat-band magnons that are localized to a hexagonal plaquette due to the special geometry of the kagome layer. Surprisingly, we observe another type of elementary magnetic excitation; a chiral magnetic quasiparticle that is also localized on a hexagonal plaquette. The short lifetime of localized flat-band and chiral quasiparticles suggest that they are hybrid excitations that decay into electronic states.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido