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arXiv 1301.7477cond-mat.supr-concond-mat.mtrl-sci
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混合价高温$_c$超导体的合理材料设计

Rational material design of mixed-valent high T$_c$ superconductors

Z. P. Yin, G. Kotliar

摘要:

我们设计,从第一性原理计算,一个新的家庭的卤化铊为基础的化合物作为新的高温超导体,其超导性介导的非局部相关增强强电子-声子耦合最近提出的机制的候选人。研究了两种原型化合物CsTlF $_3$和CsTlCl $_3$在不同空穴掺杂水平和体积下的性能。计算出临界超导温度T_($_c$)约为30 K和20 K,其中$\sim$为0.35/f. u。空穴掺杂和仅需要适度压力($\sim$ 10和$\sim$ 2 GPa)。我们设计这类超导体的过程是相当普遍的,可以用来寻找其他的“其他高温超导体“。

英文摘要:

We design, from first principles calculations, a novel family of thallium halide-based compounds as candidates for new high temperature superconductors, whose superconductivity is mediated by the recently proposed mechanism of non-local correlation-enhanced strong electron-phonon coupling. Two prototype compounds namely CsTlF$_3$ and CsTlCl$_3$ are studied with various hole doping levels and volumes. The critical superconducting temperature T$_c$ are predicted to be about 30 K and 20 K with $\sim$0.35/f.u. hole doping and require only modest pressures ($\sim$10 and $\sim$2 GPa), respectively. Our procedure of designing this class of superconductors is quite general and can be used to search for other "other high temperature superconductors".

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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