发表机构
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences; School of Physics, University of Chinese Academy of Sciences; Shanghai Key Laboratory of Material Frontiers Research in Extreme Environments (MFree), Shanghai Advanced Research in Physical Sciences (SHARPS); Center for High Pressure Science & Technology Advanced Research (HPSTAR); Department of Chemistry, Johann Wolfgang Goethe University（中国科学院物理研究所凝聚态物理国家实验室; 中国科学院大学物理学院; 上海极端环境材料前沿研究重点实验室（MFree），上海物理研究所先进物理科学中心; 高压科学和技术先进研究中心（HPSTAR）; 约翰·沃尔夫冈·歌德大学化学系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究合成碲多氢化物TeH4，在263 GPa下测得Tc约91 K，确定其为硫族多氢化物超导体，补充了多氢化物高温超导体家族成员。
AI 中文摘要
我们报道碲（Te）多氢化物中超导电性（SC）的实验发现。该化合物在高压高温条件下，采用金刚石对顶砧结合激光加热系统合成。后续在高压下进行的原位输运测量，随温度和外加磁场变化，揭示在263 GPa时存在临界温度Tc约91 K的超导转变。基于同步辐射X射线衍射实验，该超导相被确定为TeH4，其特征为共面的TeH12笼形成准分子H2单元。对磁场下SC行为的分析得出金兹堡-朗道（GL）相干长度约为47埃。碲多氢化物因此成为继首个多氢化物高温超导体SH3这一里程碑式发现之外的另一种硫族多氢化物超导体。
英文摘要
We report experimental diacovery of superconductivity (SC) in tellurium (Te) polyhydride. The compound was synthesized at high pressure and high temperature conditions using a diamond anvil cell combined with a laser heating system. Subsequent in situ transport measurements at high pressures, performed as a function of temperature and applied magnetic field, revealed a superconducting transition with a critical temperature Tc about 91 K at 263 GPa. The superconducting phase is assigned to TeH4 with characterized face shared TeH12 cage forming quasi molecular H2 units based on synchrotron x-ray diffraction experiments. Analysis of the SC behavior at magnetic fields yielded a Ginzburg Landau (GL) coherence length of approximately 54 angstroms. Tellurium polyhydride thus becomes another chalcogen polyhydride superconductor in addition to the landmark discovery of the first polyhydride high Tc SC SH3.
Comments18 pages, 5 figures
