论文标题
通用钻石边缘拉曼比例为0.5 terapascal：与氢的金属化的意义
Universal diamond edge Raman scale to 0.5 terapascal: The implication to metallization of hydrogen
论文作者
论文摘要
产生静态压力到terapascal值的最新进展为研究具有异常特性的新型材料（例如氢的金属化和高温超导性）开辟了机会。但是，对高于0.3 terapascal的压力的评估是一个挑战。我们报告的是，基于应力的钻石砧的拉曼边缘的移位，通用高压尺度高达约0.5 terapascal，与AU状态方程相关，不需要额外的压力传感器。根据新量表，与现有量表的外推相比，在〜0.5 terapascal时，压力值显着降低20％。我们比较了最高静电压力下H2的可用数据。我们表明，当与新量表校正时，不同组报告的分子氢的金属化开始是一致的，并且可以与各种理论预测进行比较。
The recent progress in generating static pressures up to terapascal values opens opportunities for studying novel materials with unusual properties, such as metallization of hydrogen and high-temperature superconductivity. However, an evaluation of pressure above ~0.3 terapascal is a challenge. We report a universal high-pressure scale up to ~0.5 terapascal, based on the shift of the Raman edge of stressed diamond anvils correlated with the equation of state of Au and does not require an additional pressure sensor. According to the new scale, the pressure values are substantially lower by 20% at ~0.5 terapascal compared to the extrapolation of the existing scales. We compared the available data of H2 at the highest static pressures. We showed that the onset of the proposed metallization of molecular hydrogen reported by different groups is consistent when corrected with the new scale and can be compared with various theoretical predictions.
