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Superconductivity of Lanthanum Superhydride Investigated Using the Standard Four-Probe Configuration under High Pressures 下载免费PDF全文
Recently,the theoretically predicted lanthanum superhydride,LaH10±δ,with a clathrate-like structure was successfully synthesized and found to exhibit a record high superconducting transition temperature Tc≈250 K at~170 GPa,opening a new route for room-temperature superconductivity.However,since in situ experiments at megabar pressures are very challenging,few groups have reported the ~250 K superconducting transition in LaH10±δ.Here,we establish a simpler sample-... 相似文献
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The recent report of pressure-induced structural transition and signature of superconductivity with Tc≈80 K above 14 GPa in La3Ni2O7 crystals has garnered considerable attention.To further elaborate this discovery,we carried out comprehensive resistance measurements on La3Ni2O7 crystals grown in an optical-image floating zone furnace under oxygen pressure(15 bar) using a diamond anvil cell(DAC) and cubic anvil cell(CAC)... 相似文献
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Emergence of Superconductivity on the Border of Antiferromagnetic Order in RbMn6Bi5 under High Pressure:A New Family of Mn-Based Superconductors 下载免费PDF全文
We report the discovery of superconductivity on the border of antiferromagnetic order in a quasi-one-dimensional material RbMn6Bi5 via measurements of resistivity and magnetic susceptibility under high pressures.Its phase diagram of temperature versus pressure resembles those of many magnetism-mediated superconducting systems.With increasing pressure,its antiferromagnetic ordering transition with TN=83 K at ambient pressure is first enhanced moderately and then s... 相似文献
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The lutetium dihydride LuH2 is stable at ambient conditions.Here we show that its color undergoes sequential changes from dark blue at ambient pressure to pink at ~2.2 GPa and then to bright red at ~4 GPa upon compression in a diamond anvil cell.Such a pressure-induced color change in LuH2 is reversible and it is very similar to that recently reported in the N-doped lutetium hydride [Nature 615,244(2023)].However,our preliminary resistance measurements on LuH2 un... 相似文献
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