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5 papers · 2 filters
Fate of Topological Dirac Magnons in van der Waals Ferromagnets at Finite Temperature
Rintaro Eto, Ignacio Salgado-Linares, Masahito Mochizuki +2
Dirac magnons, the bosonic counterparts of Dirac fermions in graphene, provide a unique platform to explore symmetry-protected band crossings and quantum geometry in magnetic insul…
Valency, charge-transfer, and orbital-dependent correlation in bilayer nickelates Nd3Ni2O7
Daisuke Takegami, Takaki Okauchi, Edgar Abarca Morales +14
We examine the bulk electronic structure of Nd3Ni2O7 using Ni 2p core-level hard x-ray photoemission spectroscopy combined with density functional theory + dynamical mean-field the…
Circular Dichroism in Resonant Inelastic X-ray Scattering: Probing Altermagnetic Domains in MnTe
D. Takegami, T. Aoyama, T. Okauchi +11
X-ray magnetic circular dichroism provides a means to identify ferromagnetic, chiral, and altermagnetic orders via their time-reversal-symmetry () breaking. However, d…
Modeling and Physics of Multiferroic Perovskite Manganites
Masahito Mochizuki
A new type of multiferroicity was experimentally discovered in 2003 in a perovskite manganite TbMnO where its ferroelectricity is induced by cycloidally ordered Mn spins. Suseq…
Predicted versatile topological nodal magnons in Tb-based icosahedral quasicrystal 1/1 approximants
Rintaro Eto, Masahito Mochizuki, Shinji Watanabe
Using a recently-established band representation analysis, we discover two distinct types of topological nodal magnons in the real-space antiferroic ordering of whirling spin arran…