Anomalous electronic susceptibility in Bi2Sr2CuO6+d and comparison with other overdoped cuprates

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 temperatu...

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Bibliographic Details
Published in:arXiv.org 2002-06
Main Authors: G Le Bras, Konstantinovic, Z, J-P Carton, get, A, Colson, D, Jean, F, Collin, G, Dumont, Y, Ayache, C
Format: Article
Language:English
Subjects:
Bismuth strontium calcium copper oxide
Cuprates
Doping
High temperature
Magnetic permeability
Temperature dependence
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.0206313