具有强库仑排斥的面心立方扩展哈伯德模型中的超轻对
Superlight pairs in face-centred-cubic extended Hubbard models with strong Coulomb repulsion
摘要：
大多数具有异常高的转变温度与动能比的富勒烯超导体具有面心立方（FCC）结构。我们证明，在扩展的哈伯德模型与强库仑排斥，在FCC晶格中的费米子对有定性不同的性质比其他三维立方晶格中的对。我们的研究结果表明，强约束，轻，小对可以产生在FCC晶格在很宽的范围内的参数空间。我们估计，即使晶格常数很大（如富勒烯），此类对也可以在高温下玻色凝聚。
英文摘要：
The majority of fulleride superconductors with unusually high transition-temperature to kinetic-energy ratios have a face-centred-cubic (FCC) structure. We demonstrate that, within extended Hubbard models with strong Coulomb repulsion, paired fermions in FCC lattices have qualitatively different properties than pairs in other three-dimensional cubic lattices. Our results show that strongly bound, light, and small pairs can be generated in FCC lattices across a wide range of the parameter space. We estimate that such pairs can Bose condense at high temperatures even if the lattice constant is large (as in the fullerides).
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
