Volume 67, Number 6, September 2004
|Page(s)||1018 - 1023|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|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
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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