论文标题
高 - $ t $$ _ \ textrm {c} $氢气中的超导性超导性是由氢与中央原子电子之间的库仑相互作用介导的
High-$T$$_\textrm{C}$ Superconductivity in Hydrogen Clathrates Mediated by Coulomb Interactions between Hydrogen and Central-Atom Electrons
论文作者
论文摘要
在高压下形成的二进制氢 - 钙甲酸盐化合物的独特特征宏观结构$ m $ h $ _ \ textrm {n} $，这是一个中央原子宿主周围的水元的笼子，在理论上是在各种研究中预测的，包括结构上稳定的拼音式唱片介导的超管剂。到目前为止，已经对具有$ m $ = la，y和th的合成量测量了高超导过渡温度$ t $ t $$ _ \ textrm {c} $。在压缩的lah $ _ \ textrm {10} $中，独立研究报告$ t $ t $ t $ t $ _ \ textrm {c} $ 250 k和超过260 k，最高$ t $ t $ t $ _ \ textrm {c} $带压力$ $ p $，以及带有温度的普通状态抗性比例（建议不加）。根据报道，$ fm $$ \ bar {3} $$ m $ -phase lah $ _ \ textrm {10} $的带结构计算，la是阴离子，化学价电子在LA和H $ _ $ _ $ _ \ textrm {10} $之间均匀分裂。因此，压缩的lah $ _ \ textrm {10} $包含结构，电荷分离和价电子的最佳平衡分配，用于支持非常规高 - $ t $ t $ t $ t $ _ \ textrm {c} $ superdoductivity介导的库仑相互作用由库仑相互作用由coulomb与la $ ______________________________________________________________________________________________________________________________________ \ _ \ _ \ _ \ 10 $ m $ h $ _ \ textrm {n} $ clathrates的最佳超导过渡温度的一般表达式被推导为$ t $ t $ _ \ textrm {c0} $ = $ k $ k $ k $ k $ _ \ textrm $ v $）/2 $ a $] $^{1/2} $^e $$^{2} $/$ $/$ $/$/$ζ$，其中$λ$是通用常数，（n + $ v $）是每个配方单位的化学价和unity unity unity unity hH and $ v $ ATOM $ M $，$ M $，$ a $ a $ $ a $ $ $ $ $ $ $ $ $ $ $ $ $ MM MONTE $ MM MONTE $ MM MONTE $ MM之间，并且多面体面的质心。适用于$ fm $$ \ bar {3} $$ m $ lah $ _ \ textrm {10} $，$ t $$ _ \ textrm {c0} $值为249.8（1.3）k和260.7（2.0）k，并在两个实验中找到了k。相关的电荷分配，结构，有效库仑电位的属性，。 。 。
The uniquely characteristic macrostructures of binary hydrogen-clathrate compounds $M$H$_\textrm{n}$ formed at high pressure, a cage of hydrogens surrounding a central-atom host, is theoretically predicted in various studies to include structurally stable phonon-mediated superconductors. High superconductive transition temperatures $T$$_\textrm{C}$ have thus far been measured for syntheses with $M$ = La, Y, and Th. In compressed LaH$_\textrm{10}$, independent studies report $T$$_\textrm{C}$ of 250 K and over 260 K, a maximum in $T$$_\textrm{C}$ with pressure $P$, and normal-state resistance scaling with temperature (suggesting unconventional pairing). According to reported band structure calculations of $Fm$$\bar{3}$$m$-phase LaH$_\textrm{10}$, the La is anionic, with the chemical valence electrons appearing evenly split between La and H$_\textrm{10}$. Thus, compressed LaH$_\textrm{10}$ contains the combination of structure, charge separation, and optimal balanced allocation of valence electrons for supporting unconventional high-$T$$_\textrm{C}$ superconductivity mediated by Coulomb interactions between electronic charges associated with La and H$_\textrm{10}$. A general expression for the optimal superconducting transition temperature for $M$H$_\textrm{n}$ clathrates is derived as $T$$_\textrm{C0}$ = $k$$_\textrm{B}$$^{-1}$$Λ$[(n + $v$)/2$A$]$^{1/2}$$e$$^{2}$/$ζ$, where $Λ$ is a universal constant, (n + $v$) is the chemical valence sum per formula unit, taking unity for H and $v$ for atom $M$, $A$ is the surface area of the H-polyhedron cage, and $ζ$ is the mean distance between the $M$ site and the centroids of the polyhedron faces. Applied to $Fm$$\bar{3}$$m$ LaH$_\textrm{10}$, $T$$_\textrm{C0}$ values of 249.8(1.3) K and 260.7(2.0) K are found for the two experiments. Associated attributes of charge allocation, structure, effective Coulomb potential, . . .
