Doping effects on the electronic structure of CuO2 planes

We have exploited angle-resolved photoelectron spectroscopy to study changes in the quasiparticle excitations of CuO2 planes as a function of the carrier density, in optimally doped and underdoped Bi2Sr2CaCuO8+x and in Sr2CuO2Cl2. We have observed large changes in the E versus k dispersion of the quasiparticle bands, and in the topology of the Fermi surface away from optimal doping. We have also found that the carrier density has a nontrivial effect on the symmetry properties of these states.


Published in:
Physica B, 230, 825-827
Year:
1997
ISSN:
0921-4526
Keywords:
Note:
Univ wisconsin,dept phys,madison,wi 53706. Grioni, M, ECOLE POLYTECH FED LAUSANNE,INST PHYS APPL,CH-1015 LAUSANNE,SWITZERLAND.
ISI Document Delivery No.: WW403
Laboratories:




 Record created 2006-10-03, last modified 2018-03-18


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