Physics – Condensed Matter – Superconductivity
Scientific paper
2001-06-29
Physics
Condensed Matter
Superconductivity
Scientific paper
Using high energy resolution angle resolved photoemission spectroscopy, we have resolved the bilayer splitting effect in a wide range of dopings of the bilayer cuprate $Bi_{2}Sr_{2}CaCu_{2}O_{8+\delta}$. This bilayer splitting is due to a nonvanishing intracell coupling $t_{\perp}$, and contrary to expectations, it is not reduced in the underdoped materials. This has implications for understanding the increased c-axis confinement in underdoped materials.
Aiura Yoshihiro
Ando Yoichi
Chuang Y.-D.
Dessau Daniel S.
Fedorov Alexi V.
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