High-Pressure Synthesis of Magnetic Neodymium Polyhydrides

三元镧多氢化物中的超导记忆与捕获磁通

Superconducting memory and trapped magnetic flux in ternary lanthanum polyhydrides

本文研究了三元镧多氢化物在175-196 GPa高压下的捕获磁通与超导记忆效应，发现La-Sc多氢化物在225-230 K下即表现出显著的记忆特性，为超导存储提供了高温平台。

Effect of paramagnetic impurities on superconductivity in polyhydrides: $\textit{s}$-wave order parameter in Nd-doped LaH$_{10}$

Polyhydrides are a novel class of superconducting materials with extremely high critical parameters, which is very promising for applications. On the other hand, complete experimental study of the magnetic phase diagram for the best so far known superconductor, lanthanum decahydride LaH$_{10}$, encounters a serious complication because of the large upper critical magnetic field $\textit{H}$$_{C2}$(0), exceeding 120-160 T. Partial replacement of La atoms by magnetic Nd atoms results in a decrease of the upper critical field, which makes it attainable for existing pulse magnets. We found that ad…

Superconductivity above 70 K observed in lutetium polyhydrides

The binary polyhydrides of heavy rare earth lutetium that shares a similar valence electron configuration to lanthanum have been experimentally discovered to be superconductive. The lutetium polyhydrides were successfully synthesized at high pressure and high temperature conditions using a diamond anvil cell in combinations with the in-situ high pressure laser heating technique. The resistance measurements as a function of temperature were performed at the same pressure of synthesis in order to study the transitions of superconductivity (SC). The superconducting transition with a maximum onset…

Superconductivity at 161 K in Thorium Hydride $ThH_{10}$: Synthesis and Properties

Here we report targeted high-pressure synthesis of two novel high-$T_C$ hydride superconductors, $P6_3/mmc$-$ThH_9$ and $Fm\bar{3}m$-$ThH_{10}$, with the experimental critical temperatures ($T_C$) of 146 K and 159-161 K and upper critical magnetic fields ($μ$$H_C$) 38 and 45 Tesla at pressures 170-175 Gigapascals, respectively. Superconductivity was evidenced by the observation of zero resistance and a decrease of $T_C$ under external magnetic field up to 16 Tesla. This is one of the highest critical temperatures that has been achieved experimentally in any compounds, along with such materials…

新型超导材料的计算设计及其定向实验合成

Computational design of new superconducting materials and their targeted experimental synthesis

该研究回顾了2015-2021年超导氢化物进展，提出理论-实验算法分析超导性质，并展示了计算预测与实验合成相结合的有效性。

室温超导的进展、问题与前景

Progress, problems and prospects of room-temperature superconductivity

本文综述了兆巴压力下金属聚氢化物室温超导的进展，通过磁电测量证实其超导态与电子-声子配对机制，并指出强电子关联可能是导致其异常线性物理性质的关键原因。