Abstract
We studied the impurity effect on the electronic structure near the Fermi level in Bi 2Sr 2CaCu 2O 8+ δ by high-resolution angle-resolved photoemission spectroscopy to clarify the origin of dispersion kink in high- T c superconductors. We found that the dispersion kink at off-nodal region is significantly suppressed by Zn or Ni impurity while that at the node is less affected, suggesting that electrons are strongly coupled to the spin excitations at the off-nodal region.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
