We report magnetic susceptibility performed on overdoped Bi2Sr2CuO6+d powders as a function of oxygen doping d and temperature T. The decrease of the spin susceptibility with increasing T is confirmed. At sufficient high temperature, the spin susceptibility Chi_s presents an unusual linear temperature dependence Chi_s ~ Chi_s0 -Chi_1 T. Moreover, a linear correlation between Chi_1 and Chi_s0 for increasing hole concentration is displayed. A temperature Tchi, independent of hole doping characterizes this scaling. Comparison with other cuprates of the literature(LSCO, Tl-2201 and Bi-2212), over the same overdoped range, shows similarities with above results. These non conventional metal features will be discussed in terms of a singular narrow-band structure.
@article{arxiv.cond-mat/0206313,
title = {Anomalous electronic susceptibility in Bi2Sr2CuO6+d and comparison with other overdoped cuprates},
author = {G. Le Bras and Z. Konstantinovic and J-P. Carton and A. Forget and D. Colson and F. Jean and G. Collin and Y. Dumont and C. Ayache},
journal= {arXiv preprint arXiv:cond-mat/0206313},
year = {2009}
}