论文标题
硼氮掺杂型腺体超级水的室温超导性
Room-Temperature Superconductivity in Boron-Nitrogen Doped Lanthanum Superhydride
论文作者
论文摘要
最近在兆巴压力（即> 100 GPA）处的富氢材料的理论和实验研究导致这些材料中发现了非常高温的超导性。 Lanthanum Super Hydride lah $ _ {10} $特别是在室温附近展示超导临界温度（T $ _C $）的第一种材料。实验表明，使用硼烷作为氢源可以将脑电图的电导率开始高达290K。在这里，我们研究了B和N原子对LAH $ _ {10} $ fcc（fcc（FM-3M）中的lah $ _ {10} $的超导性的兴奋剂影响。在H原子位置掺杂可以增强结构的H $ _ {32} $笼子，以提供更高的声子频率，从而增强Debye频率，从而提供了计算出的T $ _C $。预测的t $ _c $可以在240 GPA的平均高对称结构内达到lah $ _ {9.985} $ _ {9.985} $ _ {0.015} $的288 k。
Recent theoretical and experimental studies of hydrogen-rich materials at megabar pressures (i.e., >100 GPa) have led to the discovery of very high-temperature superconductivity in these materials. Lanthanum superhydride LaH$_{10}$ has been of particular focus as the first material to exhibit a superconducting critical temperature (T$_c$) near room temperature. Experiments indicate that the use of ammonia borane as the hydrogen source can increase the conductivity onset temperatures of lanthanum superhydride to as high as 290 K. Here we examine the doping effects of B and N atoms on the superconductivity of LaH$_{10}$ in its fcc (Fm-3m) clathrate structure at megabar pressures. Doping at H atomic positions strengthens the H$_{32}$ cages of the structure to give higher phonon frequencies that enhance the Debye frequency and thus the calculated T$_c$. The predicted T$_c$ can reach 288 K in LaH$_{9.985}$N$_{0.015}$ within the average high-symmetry structure at 240 GPa.
