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21d
超快光谱建立La₃Ni₂O₇密度波相变的压力演化相图 | 进展
镍基超导体 是继铜基和铁基之后又一个重要的高温超导家族。镍氧化物与铜氧化物具有类似的晶体结构和电子构型, 为高温超导机理研究提供了新的平台 。2023年中国科学家首次发现双镍氧层钙钛矿La 3 Ni 7 单晶在14 GPa压力下出现高达80K的超导电性,引起了国内外同行的广泛关注。该材料在常压下不具备超导电性,但可能存在两个类密度波相变。研究La 3 Ni ...
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