Direct Probing of Fermi Surface Instability with SDW-type Anti-ferromagnetic Order

与SDW型反铁磁序相关的费米面不稳定性由于反铁磁相和超导相的密切存在而备受关注。本研究通过高分辨Compton散射实验和重构方法的联合研究，从实验上揭示了反铁磁有序与关联巡游电子系统的关系。我们测量了铁基超导体和铜酸盐超导体。在铜氧化物中，我们发现欠掺杂区的导电掺杂空穴受到反铁磁序涨落的影响。

Fermi surface instability associated with SDW-type anti-ferromagnetic order draws much attention because the anti-erromagnetic phase and superconducting phase exist closely each other. In this study we have performed joint studies of high-resolution Compton scattering experiment and reconstruction method, and have revealed experimentally the relation between anti-ferromagnetic order and correlated itinerant electron system. We measured iron-based superconductors and cuprate superconductors. In the cuprates we found that the conducting doped holes in the under-doped region are influenced by the fluctuating anti-ferromagnetic order.