论文标题
通过Hafnium稳定的氢“ Penta-Graphene”结构：高温常规超导体
Hydrogen "penta-graphene-like" structure stabilized by hafnium: a high-temperature conventional superconductor
论文作者
论文摘要
最近发现的H3S和LAH10超导导体具有创纪录的高超导过渡温度，TC在高压下，在压缩的超水中促进了寻找室温超导性的。在这里，我们预测存在前所未有的六角形HFH10，在250 GPA时，TC非常高的TC约为213-234 k。在HFH10中，与H3S中的共价六倍结构和LAH10中的lahrate样结构相比，H原子被排列在簇中，形成平面“类似penta-graphene”的sublattice。 HF原子充当Sublatice氢的“预压缩器”和电子供体。在高压下，在Zrh10，Sch10和LuH10中也发现了这种“ Penta-Graphene样” H10结构，每种材料均显示高134至220 kelvin。我们对使用“五烯类 - 格拉烯样”分层结构的密集的超水的研究为探索和开发一类新的高TC超导体打开了大门。
The recent discovery of H3S and LaH10 superconductors with record high superconducting transition temperatures, Tc, at high pressure, has fueled the search for room-temperature superconductivity in the compressed superhydrides. Here we predict the existence of an unprecedented hexagonal HfH10, with an extraordinarily high Tc of around 213-234 K at 250 GPa. In HfH10, the H atoms are arranged in clusters to form a planar "penta-graphene-like" sublattice, in contrast to the covalent sixfold cubic structure in H3S and clathrate-like structure in LaH10. The Hf atom acts as a "precompressor" and electron donor to the hydrogen sublattice. This "penta-graphene-like" H10 structure is also found in ZrH10, ScH10 and LuH10 at high pressure, each material showing a high Tc ranging from 134 to 220 kelvin. Our study of dense superhydrides with "penta-graphene-like" layered structures opens the door to the exploration and exploitation of a new class of high Tc superconductors.
