On electron-hole symmetry and phase separation in some electron doped cuprates

Details On electron-hole symmetry and phase separation in some electron doped cuprates On electron-hole symmetry and phase separation in some electron doped cuprates

2005-09-16

arxiv.org/abs/cond-mat/0509445v1

Physics

Condensed Matter

Superconductivity

9 pages, 2 figures, to be published in "Solid State Communications"

Scientific paper

10.1016/j.ssc.2005.09.019

We conclude from the analysis of the experimental NMR data for electron-doped cuprates that the Coulomb effects caused by doping lead to dynamical spatial phase separation that contributes to the nuclear spin relaxation. Remarkable, the "infinite-layer" Sr0.9La0.1CuO2 reveals unexpected electron-hole symmetry. Its 63^Cu nuclear spin relaxation rate is the sum of a constant and the temperature dependent dissipation components, moreover, the latter turns out to be identical to the 1/63^T_1(T)-behavior in the stoichiometric hole-type compound YBa2Cu4O8. Connection to fluctuations of a magnetic sub-phase is discussed.

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