title: Identification of a new form of electron coupling in the Bi2Sr2CaCu2O8 superconductor by laser-based angle-resolved photoemission spectroscopy.
abstract: Laser-based angle-resolved photoemission measurements with superhigh resolution have been carried out on an optimally doped Bi(2)Sr(2)CaCu(2)O(8) high temperature superconductor. New high energy features at approximately 115 meV and approximately 150 meV, in addition to the prominent approximately 70 meV one, are found to develop in the nodal electron self-energy in the superconducting state. These high energy features, which cannot be attributed to electron coupling with single phonon or magnetic resonance mode, point to the existence of a new form of electron coupling in high temperature superconductors.
authors: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China.
authors: Wentao
authors: W
authors: Zhang
authors: Guodong
authors: G
authors: Liu
authors: Lin
authors: L
authors: Zhao
authors: Haiyun
authors: H
authors: Liu
authors: Jianqiao
authors: J
authors: Meng
authors: Xiaoli
authors: X
authors: Dong
authors: Wei
authors: W
authors: Lu
authors: J S
authors: JS
authors: Wen
authors: Z J
authors: ZJ
authors: Xu
authors: G D
authors: GD
authors: Gu
authors: T
authors: T
authors: Sasagawa
authors: Guiling
authors: G
authors: Wang
authors: Yong
authors: Y
authors: Zhu
authors: Hongbo
authors: H
authors: Zhang
authors: Yong
authors: Y
authors: Zhou
authors: Xiaoyang
authors: X
authors: Wang
authors: Zhongxian
authors: Z
authors: Zhao
authors: Chuangtian
authors: C
authors: Chen
authors: Zuyan
authors: Z
authors: Xu
authors: X J
authors: XJ
authors: Zhou