论文标题
在hafnium的多氢化物中，超过80 K以上的超导性
Superconductivity above 80 K in polyhydrides of hafnium
论文作者
论文摘要
由于其潜在的高温超导率（SC），多水的研究最近吸引了增长的注意力。我们在这里报告在高压下发现SC在Hafnium多水中的发现。 Hafnium超水在高压和高温条件下使用钻石砧室合成，并结合原位高压激光加热技术。通过在施加的磁场中的原位高压测量测量来研究SC。在243 GPA处观察到具有发作TC〜83 K的超导过渡。通过GL理论估计，上临界场HC2（0）为24 TESLA，随之而来的超导相干长度为〜37 Angstrom。我们的结果表明，超导阶段来自C2/M-HFH14。这是TC高于液氮温度的第一个5D过渡金属多氢气超导体。
Studies on polyhydrides are attracting growing attentions recently due to their potential high temperature superconductivity (SC). We here report the discovery of SC in hafnium polyhydrides at high pressures. The hafnium superhydrides are synthesized at high pressure and high temperature conditions using diamond anvil cell in combination with in-situ high pressure laser heating technique. The SC was investigated by in-situ high pressure resistance measurements in applied magnetic fields. A superconducting transition with onset Tc ~83 K was observed at 243 GPa. The upper critical field Hc2(0) was estimated to be 24 Tesla by GL theory and the consequent superconducting coherent length to be ~37 angstrom. Our results suggest that the superconducting phase is from C2/m-HfH14. This is the first 5d transition metal polyhydride superconductor with Tc above the liquid nitrogen temperature.
