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• W4313332272 abstract "Metallic ferromagnets with strongly interacting electrons often exhibit remarkable electronic phases such as ferromagnetic superconductivity, complex spin textures, and nontrivial topology. In this report, we discuss the synthesis of a layered magnetic metal $mathrm{Ni}{mathrm{Ta}}_{4}{mathrm{Se}}_{8}$ (or ${mathrm{Ni}}_{1/4}mathrm{Ta}{mathrm{Se}}_{2}$) with a Curie temperature of 58 Kelvin. Magnetization data and density functional theory calculations indicate that the nickel atoms host uniaxial ferromagnetic order of about $0.7{ensuremath{mu}}_{B}$ per atom, while an even smaller moment is generated in the itinerant tantalum conduction electrons. Strong correlations are evident in flat bands near the Fermi level, a high heat capacity coefficient, and a high Kadowaki-Woods ratio. Density functional theory calculations suggest that electron and hole Fermi surfaces in the ferromagnetic phase are associated with opposite spin polarization. When the system is diluted of magnetic ions, the samples become superconducting below about 2 Kelvin. We discuss possible mechanisms for superconductivity in this family." @default.
• W4313332272 created "2023-01-06" @default.
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• W4313332272 date "2022-12-29" @default.
• W4313332272 modified "2023-10-17" @default.
• W4313332272 title "Strongly correlated itinerant magnetism near superconductivity in <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msub><mml:mrow><mml:mi>NiTa</mml:mi></mml:mrow><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mi>Se</mml:mi></mml:mrow><mml:mn>8</mml:mn></mml:msub></mml:math>" @default.
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• W4313332272 doi "https://doi.org/10.1103/physrevb.106.224429" @default.
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