The superconductivity of Li-intercalated β-HfNCl in the light of the HTSC cuprates
The superconductivity of Li-intercalated β-HfNCl in the light of the HTSC cuprates
复制标题
基于 HTSC 铜酸盐的嵌锂 β-HfNCl 的超导性
DOI：
10.1088/0953-2048/12/10/301
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发表时间：
1999
影响因子：
3.6
通讯作者：
J. Wilson
中科院分区：
文献类型：
--
作者：
J. Wilson
层状氯氮化物半导体-HfNCl部分插入有机溶剂化Li时，在26 K时表现出超导性，这一数值足以与（La,Sr）2CuO4等进行比较。与d8， d9， d10一样，在d0， d1， d2之间，状态能级能量发生了足够快的变化，从而允许双加载波动与EF共振。这是影响（作为2HfIV2-）在锂插层系统的明显异质环境。然而，与正常情况不同的是，现在没有出现现场状态能量的强负u排序来创建任何接近的模拟。尽管如此，相应的Zr （4d）材料的低得多的Tc将表明超导性的一些非声子“化学”解释。一个更像Rb3C60插层富勒烯家族的场景看起来更合适。这取决于夹层结构的Hf-Hf阵列在插层时产生的无序的局部同极键行为。
The layered chloronitride semiconductor -HfNCl when partially intercalated with organosolvated Li shows superconductivity at 26 K, a value striking enough to demand some comparison with (La,Sr)2CuO4, etc. As with d8, d9, d10, so between d0, d1, d2 a sufficiently rapid shift occurs in the state level energies to allow a double-loading fluctuation to become resonant with EF. This is effected (as 2HfIV2-) within the manifestly heterogeneous environment of the Li-intercalated system. However, unlike the cuprate circumstance, there now occurs no strong negative-U ordering of on-site state energies to create any close analogue. Nonetheless, the much lower Tc of the corresponding Zr (4d) material would indicate some non-phononic `chemical' interpretation for the superconductivity. A scenario more like that advocated earlier for the Rb3C60 family of intercalated fullerenes looks more appropriate. This rests on disordered local homopolar bond behaviour, arising within the Hf-Hf array of the bisandwich -structure on intercalation.