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.
@article{arxiv.cond-mat/0509445,
title = {On electron-hole symmetry and phase separation in some electron doped cuprates},
author = {Lev P. Gor'kov and Gregory B. Teitel'baum},
journal= {arXiv preprint arXiv:cond-mat/0509445},
year = {2009}
}
Comments
9 pages, 2 figures, to be published in "Solid State Communications"