Ge（001）上Au链中严格一维电子系统的光电子K空间映射
Strictly One-Dimensional Electron System in Au Chains on Ge(001) Revealed By Photoelectron K-Space Mapping
摘要：
利用k分辨光电子能谱研究了Au/Ge（001）纳米线的导电子能带结构。观察到两个金属电子袋。它们的费米面片在实验不确定性范围内形成垂直于链的直线，没有起伏。因此，电子严格地限制在一维空间中。此外，该系统是稳定的，对Peierls失真下降到10 K，贷款本身的光谱函数的研究。异常低的光谱重量在化学势的迹象进行了讨论。
英文摘要：
Atomic nanowires formed by Au on Ge(001) are scrutinized for the band topology of the conduction electron system by k-resolved photoemission. Two metallic electron pockets are observed. Their Fermi surface sheets form straight lines without undulations perpendicular to the chains within experimental uncertainty. The electrons hence emerge as strictly confined to one dimension. Moreover, the system is stable against a Peierls distortion down to 10 K, lending itself for studies of the spectral function. Indications for unusually low spectral weight at the chemical potential are discussed.
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