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- W4387060235 abstract "Abstract The recent report of near-ambient superconductivity and associated color changes in pressurized nitrogen doped lutetium hydride has triggered worldwide interest and raised major questions about the nature and underlying physics of these latest claims. Here we report synthesis and characterization of high-purity nitrogen doped lutetium hydride LuH 2± x N y . We find that pressure conditions have notable effects on Lu-N and Lu-NH chemical bonding and the color changes likely stem from pressure-induced electron redistribution of nitrogen/vacancies and interaction with the LuH 2 framework. No superconducting transition is found in all the phases at temperatures 1.8-300 K and pressures 0-38 GPa. Instead, we identify a notable temperature-induced resistance anomaly of electronic origin in LuH 2± x N y , which is most pronounced in the pink phase and may have been erroneously interpreted as a sign of superconducting transition. This work establishes key benchmarks for nitrogen doped lutetium hydrides, allowing an in-depth understanding of its novel pressure-induced phase changes." @default.
- W4387060235 created "2023-09-27" @default.
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- W4387060235 date "2023-09-26" @default.
- W4387060235 modified "2023-10-04" @default.
- W4387060235 title "Observation of non-superconducting phase changes in nitrogen doped lutetium hydrides" @default.
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- W4387060235 doi "https://doi.org/10.1038/s41467-023-41777-7" @default.
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