Universality of the electronic structure from a half-filled (formula presented) plane
Journal
Physical Review B - Condensed Matter and Materials Physics
Journal Volume
67
Journal Issue
3
Date Issued
2003
Author(s)
Ronning, F.
Kim, C.
Shen, K. M.
Armitage, N. P.
Damascelli, A.
Lu, D. H.
Feng, D. L.
Shen, Z. X.
Miller, L. L.
Kim, Y. J.
Terasaki, I.
Abstract
We present angle-resolved photoemission spectroscopy data from insulating (formula presented) (formula presented) Ca; (formula presented) Br), (formula presented) and (formula presented) (formula presented) Dy) single crystals, which illustrate that the low-energy electronic structure of the half-filled cuprates are independent of the apical atom. By performing a photon energy dependent study on (formula presented) we are able to distinguish between features which are intrinsic and those which are a result of the photoemission matrix elements. We find that the dispersion is independent of photon energy, while an asymmetry in the electron occupation probability across the antiferromagnetic zone boundary is robust to variations in photon energy. Finally, we show that the d-wave-like dispersion which exists in the insulator along the antiferromagnetic zone boundary does not precisely fit the simple d-wave functional form near the nodal direction. © 2003 The American Physical Society.
SDGs
Type
journal article