论文标题
在单个正骨域中揭示FESE的单一电子口袋
Revealing the single electron pocket of FeSe in a single orthorhombic domain
论文作者
论文摘要
我们从各个正骨域内测量FESE的电子结构。通过高度聚焦的梁点（纳米 - 棕榈），通过角度分辨光发射光谱光束线启用，我们在FESE中识别出透明条带状的正晶域，长度比例约为1-5〜 $μ$ m。我们对单个域内费米表面和带状结构的光发射测量显示了布里鲁因区角的单个电子口袋。该结果为FESE的单电子口袋电子结构提供了明确的证据，该结构在没有单轴菌株的情况下观察到，并要求对这种不寻常的费米表面拓扑的理论深入了解。我们的结果还展示了纳米弧的潜力研究与局部域结构相关材料的研究。
We measure the electronic structure of FeSe from within individual orthorhombic domains. Enabled by an angle-resolved photoemission spectroscopy beamline with a highly focused beamspot (nano-ARPES), we identify clear stripe-like orthorhombic domains in FeSe with a length scale of approximately 1-5~$μ$m. Our photoemission measurements of the Fermi surface and band structure within individual domains reveal a single electron pocket at the Brillouin zone corner. This result provides clear evidence for a one-electron pocket electronic structure of FeSe, observed without the application of uniaxial strain, and calls for further theoretical insight into this unusual Fermi surface topology. Our results also showcase the potential of nano-ARPES for the study of correlated materials with local domain structures.
