Loading...
research article
Doping dependence of the Fermi surface in the cuprates: A photoemission investigation
We have exploited angle-resolved photoelectron spectroscopy (ARPES) to study the electronic structure of single crystal samples of high T-c material Bi2Sr2CaCu2O8+delta and of the antiferromagnetic insulator Sr2CuO2Cl2. As one moves away from optimal doping into underdoped region (T-c as low as 30K), the large Fermi surface sheet centered around the (pi,pi) point evolves into a small pocket centered around (pi/2,pi/2), and the saddle-point van Hove singularity is lost This evolution can be extrapolated to Sr2CuO2Cl2, which is apparently well described by the mean field spin-density wave calculation.
Type
research article
Authors
LaRosa, S.
•
Zwick, F.
•
•
•
Kelley, R. J.
•
Ma, J.
•
Chubukov, A.
•
Onellion, M.
•
Vobornik, I.
Publication date
1996
Published in
Volume
69
Start page
25
End page
26
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
April 7, 2010
Use this identifier to reference this record