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- W4387246507 abstract "Abstract Rare-earth engineering is an effective way to introduce and tune the magnetism in topological Kagome magnets, which has been acting as a fertile platform to investigate the quantum interactions between geometry, topology, spin, and correlation. Here we report the structure and properties of three newly discovered titanium-based Kagome metals RETi 3 Bi 4 (RE = Yb, Pr, and Nd) with various magnetic states. They all crystalize in the orthogonal space group Fmmm (No. 69), where slightly distorted Ti Kagome lattice, RE triangular lattice, Bi honeycomb and triangular lattices stack along the a axis. By changing the rare earth atoms on RE zag-zig chains, the magnetism can be tuned from nonmagnetic YbTi 3 Bi 4 to short-range ordered PrTi 3 Bi 4 ( T anomaly ~ 8.2 K), and finally to ferromagnetic NdTi 3 Bi 4 ( T c ~ 8.5 K). The resistivity and specific heat capacity measurements demonstrate an evolution of electron correlation and density of states near the Fermi level with different rare earth atoms. In-situ resistance measurements of NdTi 3 Bi 4 under high pressure further reveal a potential relationship between the electron correlation and ferromagnetic ordering temperature. These results highlight RETi 3 Bi 4 as a new family of topological Kagome magnets to explore nontrivial band topology and exotic phases in Kagome materials." @default.
- W4387246507 created "2023-10-03" @default.
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- W4387246507 date "2023-10-02" @default.
- W4387246507 modified "2023-10-03" @default.
- W4387246507 title "Tunable magnetism and electron correlation in titanium-based Kagome metals RETi3Bi4 (RE = Yb, Pr, and Nd) by rare-earth engineering" @default.
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- W4387246507 doi "https://doi.org/10.21203/rs.3.rs-3318771/v1" @default.
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