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  1. ; ; ; ; ; ; ; ; ; ; et al ( , Physical Review B)
    Free, publicly-accessible full text available November 1, 2024
  2. ; ; ; ; ; ; ; ; ; ; et al ( , Physical Review B)
  3. ; ; ; ; ; ; ; ; ; ; et al ( , ACS Nano)
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  4. ; ; ; ; ; ; ; ( , Journal of Alloys and Compounds)
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  5. ; ; ( , Chemical Reviews)
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  6. ; ; ; ; ; ; ; ; ; ; et al ( , Nano Letters)
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  7. ; ; ; ; ; ; ; ; ; ( , Physical Review B)
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  8. ; ; ; ; ; ; ; ; ( , Physical Review B)
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  9. ; ; ; ; ; ; ; ; ; ; et al ( , npj Quantum Materials)
    Abstract

    We report a layered ternary selenide BaPt4Se6featuring sesqui-selenide Pt2Se3layers sandwiched by Ba atoms. The Pt2Se3layers in this compound can be derived from the Dirac-semimetal PtSe2phase with Se vacancies that form a honeycomb structure. This structure results in a Pt (VI) and Pt (II) mixed-valence compound with both PtSe6octahedra and PtSe4square net coordination configurations. Temperature-dependent electrical transport measurements suggest two distinct anomalies: a resistivity crossover, mimic to the metal-insulator (M-I) transition at ~150 K, and a resistivity plateau at temperatures below 10 K. The resistivity crossover is not associated with any structural, magnetic, or charge order modulated phase transitions. Magnetoresistivity, Hall, and heat capacity measurements concurrently suggest an existing hidden state below 5 K in this system. Angle-resolved photoemission spectroscopy measurements reveal a metallic state and no dramatic reconstruction of the electronic structure up to 200 K.

     
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  10. ; ; ; ; ; ; ; ; ; ; et al ( , Physical Review X)
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