高压下富氢高温超导体的新探索

实现室温超导是超导研究的终极目标.最近科学家在高压下富氢材料中发现了系列高温超导体,特别是首先被理论预测随后被实验证实的新型硫氢化物H3S和镧系氢化物LaH10,它们的超导转变温度均超过200 K.富氢材料已经被认为是室温超导体的最佳候选体系,成为物理、材料、超导等多学科的研究热点.综述了本课题组在此领域的主要成果,包...

New Exploration of Hydrogen-based High-temperature Superconductors under High Pressure

Developing room-temperature superconductors is the ultimate goal of superconducting research field.Recent work focus onthe development of high-temperature superconductors in hydrogen-rich materials under high pressure.Sulfur hydride(H₃S)and lanthanide hydride(LaH₁₀)with superconducting transition temperatures(T_c)of>200 K are theoretically predicted and then experimentally confirmed.Hydrogen-rich materials are considered as one of optimum candidates for room-temperature superconductors,thus becoming a hot research aspect in physics and materials.Some contributions in this aspect were achieved involve a variety of new cage-like superhydridesPrH₉ and NdH₉ are synthesized under high pressure,and their T_cis determined,The magnetic properties of NdH₉ are discovered and its magnetic properties suppress a superconductivity;Novel cage-like superhydrides of CaH_(9 )are designed under high pressure,and its T_cis predicted to be 266 K;superconducting zirconium hydrogen compounds ZrH₃ and Zr₄ H₁₅ are synthesized under mild pressure conditions by experimental and theoretical studie;The binary hydrides are extended to ternary hydrides,and MgXH₆(X=Si,Ge)with T_cof 60 K are designed.