A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet.
Nature communications 10:1 (2019) 1229
Abstract:
Geometrical frustration and a high magnetic field are two key factors for realizing unconventional quantum states in magnetic materials. Specifically, conventional magnetic order can potentially be destroyed by competing interactions and may be replaced by an exotic state that is characterized in terms of quasiparticles called magnons, the density and chemical potential of which are controlled by the magnetic field. Here we show that a synthetic copper mineral, Cd-kapellasite, which comprises a kagomé lattice consisting of corner-sharing triangles of spin-1/2 Cu2+ ions, exhibits an unprecedented series of fractional magnetization plateaus in ultrahigh magnetic fields of up to 160 T. We propose that these quantum states can be interpreted as crystallizations of emergent magnons localized on the hexagon of the kagomé lattice.Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice
Journal of the Physical Society of Japan Physical Society of Japan 87:9 (2018) 093702
Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice
ArXiv 1808.02219 (2018)
Phase diagram of multiferroic KCu3As2O7(OD)3
Physical Review B American Physical Society (APS) 95:21 (2017) 214415
Iyoite, MnCuCl(OH)3 and misakiite, Cu3Mn(OH)6Cl2: new members of the atacamite family from Sadamisaki Peninsula, Ehime Prefecture, Japan
Mineralogical Magazine Mineralogical Society 81:3 (2017) 485-498