论文标题

在生命值超导体的电子动力学中的骨率模式耦合的证据

Evidence for bosonic mode coupling in electron dynamics of LiFeAs superconductor

论文作者

Li, Cong, Dai, Guangyang, Cai, Yongqing, Wang, Yang, Wang, Xiancheng, Gao, Qiang, Liu, Guodong, Huang, Yuan, Wang, Qingyan, Zhang, Fengfeng, Zhang, Shenjin, Yang, Feng, Wang, Zhimin, Peng, Qinjun, Xu, Zuyan, Jin, Changqing, Zhao, Lin, Zhou, X. J.

论文摘要

在生命值超导体上进行了超高分辨率激光分辨率分辨光发射测量,以研究其电子动力学。 $ \ sim $ 20 meV,$ \ sim $ 34 mev和$ \ sim $ 55 meV的三个能量秤首次在超导状态和正常状态下首次揭示电子自我能源。 $ \ sim $ 20 MEV和$ \ sim $ 34 MEV量表可以归因于电子与尖锐的玻体模式的耦合,这很可能是声子。这些观察结果提供了有关基于铁的超导体模式耦合存在的明确证据。

Super-high resolution laser-based angle-resolved photoemission measurements are carried out on LiFeAs superconductor to investigate its electron dynamics. Three energy scales at $\sim$20 meV, $\sim$34 meV and $\sim$55 meV are revealed for the first time in the electron self-energy both in the superconducting state and normal state. The $\sim$20 meV and $\sim$34 meV scales can be attributed to the coupling of electrons with sharp bosonic modes which are most likely phonons. These observations provide definitive evidence on the existence of mode coupling in iron-based superconductors.

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