| Issue |
Europhys. Lett.
Volume 67, Number 6, September 2004
|
|
|---|---|---|
| Page(s) | 1018 - 1023 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10199-0 | |
| Published online | 01 September 2004 | |
Observation of the pseudogap in the heavily overdoped
high-temperature superconductor
Laboratory for Neutron Scattering, ETH Zurich & PSI Villigen CH-5232 Villigen PSI, Switzerland
Received:
7
May
2004
Accepted:
27
July
2004
We studied the relaxation behavior of crystal-field transitions
in the heavily overdoped high-temperature superconductor
(
) by neutron spectroscopic experiments. There is clear
evidence for the opening of the pseudogap at
and 
for the
and 
compound, respectively.
The fact that the pseudogap phenomenon extends far into the
overdoped region supports the theoretical view of the existence
of preformed pairs at 
.
PACS: 74.72.Dn – 
-based cuprates / 76.30.Kg – Rare-earth ions and impurities / 78.70.Nx – Neutron inelastic scattering
© EDP Sciences, 2004
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