论文标题
压缩阳离子 - 纤维基因合金中的超导性和磁性
Superconductivity and magnetism in compressed actinium-beryllium-hydrogen alloys
论文作者
论文摘要
新的高温超导体的发现是材料，化学和物理学中最关键的问题之一。这项工作系统地研究了XBEH8（X是AC，TH，PA，U和NP）的氟石样结构，以了解对性质的压力影响的物理见解。我们的结果表明，Acbeh8和Thbeh8是两个潜在的高温超导体，在150 GPA时，AcbeH8达到284.11 K的超导过渡温度为284.11 K，甚至在50 GPA时的值为203.29 K，THBEH8在200 GPA时TC为217.65 K，并提供了较强的温度，以供应良好的温度，以供候选人候选人。压力效应的分析表明，系统中的电荷转移和原子结构异常，AC/TH原子中的S-F迁移和S-P迁移为原子，类似于碱金属的高压行为。在过去的长期以来，超导性和磁性被认为无法共存。但是，UBEH8和NPBEH8是两个潜在的磁性超导体，最大TC分别为60.70和107.18 K，分别为100和350 GPA，Hubbard U计算预测其磁矩为1.52至1.90至1.90和2.49至2.92 Mub。在0 K.在0 K.的磁性和超级构成的磁性和超级构成的磁性均可归属于磁性效果。
The discovery of new high-temperature superconductors is one of the most critical problems in materials, chemistry, and physics. This work systematically investigates fluorite-like structures of XBeH8 (X is Ac, Th, Pa, U, and Np) to gain physical insight into the pressure effects on the properties. Our results reveal that AcBeH8 and ThBeH8 are two potential high-temperature superconductors, where AcBeH8 reaching a superconducting transition temperature of 284.11 K at 150 GPa and even a value of 203.29 K at 50 GPa, ThBeH8 has Tc is 217.65 K at 200 GPa, and the predicted results provide strong candidates for achieving high temperature or even room temperature superconductivity. The analysis of pressure effects demonstrates unusual charge transfer and atomic structure in the system, with s-f migration in Ac/Th atoms and s-p migration in Be atoms, similar to the high-pressure behavior of alkaline earth metals. In the past long time, superconductivity and magnetism were considered unable to coexist. However, UBeH8 and NpBeH8 are two potential magnetic superconductors with maximum Tc of 60.70 and 107.18 K at 100 and 350 GPa, respectively, and Hubbard U calculations predict their magnetic moments with 1.52 to 1.90 and 2.49 to 2.92 muB at 0 K. The coexistence of magnetic and superconducting states may be attributed to the different sublattice actions.
