arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1703.03362cond-mat.supr-con
收藏

氢化氟中可能的高温超导性

Possible High-Temperature Superconductivity in Hygrogenated Fluorine

D. A. Papaconstantopoulos

摘要:

最近通过实验证实的计算研究已经建立了超导温度$T_c$的发生,当化合物H $_3S$中的压力接近200 GPa时,接近200 K。受这些发现的启发,我们在这项工作中研究了在材料H $_3$ F中发现高温超导性的可能性。我们进行了线性增广平面波(LAPW)的计算,然后通过确定的角动量分量的状态密度,在费米能级和电子-离子矩阵元素的Hopfield参数的散射相移。我们计算的Hopfield参数远大于H $_3$ S中的参数,这表明它们可能导致大的电子-声子耦合常数,从而导致类似于甚至大于H $_3$ S的大的Tc。然而,关于这种材料的稳定性,弹性常数的计算是不确定的。

英文摘要:

Recent computational studies confirmed by experiment have established the occurrence of superconducting temperatures, $T_c$, near 200 K when the pressure is close to 200 GPa in the compound H$_3S$. Motivated by these findings we investigate in this work the possibility of discovering high-temperature superconductivity in the material H$_3$F. We performed linearized augmented plane wave(LAPW) calculations followed by the determination of the angular momentum components of the density of states, the scattering phase shifts at the Fermi level and the electron-ion matrix element known as the Hopfield parameter. Our calculated Hopfield parameters are much larger than those found in H$_3$S suggesting that they may lead to large electron-phonon coupling constant and hence a large Tc similar or even larger than that of H$_3$S. However, calculations of elastic constants are inconclusive regarding the stability of this material.

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。

↑