未水合和水合钠钴氧化物费米面中的椭圆孔穴
Elliptical hole pockets in the Fermi surfaces of unhydrated and hydrated sodium cobalt oxides
摘要：
当钠钴氧化物与水水合时，在5K以下的超导性的惊人发现引起了实验学家和理论家的注意。大多数对它的解释都集中在一些小的椭圆形口袋的性质上，这些口袋被预测为电子占主导地位的费米面片，但直接寻找它们的尝试却对它们的存在产生了严重的怀疑。在这里，我们提出的证据表明，这些口袋确实存在的基础上，散装测量的电子动量分布在未水合和水合钠钴氧化物使用的X射线康普顿散射技术。
英文摘要：
The surprise discovery of superconductivity below 5K in sodium cobalt oxides when hydrated with water has caught the attention of experimentalists and theorists alike. Most explanations for its occurence have focused heavily on the properties of some small elliptically shaped pockets predicted to be the electronically dominant Fermi surface sheet, but direct attempts to look for them have instead cast serious doubts over their existence. Here we present evidence that these pockets do indeed exist, based on bulk measurements of the electron momentum distribution in unhydrated and hydrated sodium cobalt oxides using the technique of x-ray Compton scattering.
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。
