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

Article

关键词: HIGH-TEMPERATURE SUPERCONDUCTORS;    MAGNETIC-PROPERTIES;    FERMI-SURFACE;    NORMAL-STATE;    O-17 NMR;    LA2-XSRXCUO4;    TRANSPORT;    PSEUDOGAP;    TC;    BI2SR2CACU2O8+DELTA;   

DOI  :  10.1103/PhysRevB.66.174517

来源: SCIE

【 摘 要 】

We report magnetic susceptibility performed on overdoped Bi2Sr2CuO6+delta powders as a function of oxygen doping delta and temperature T. The decrease of the spin susceptibility chi(s) with increasing T is confirmed. At sufficiently high temperature, chi(s) presents an unusual linear temperature dependence chi(s)similar tochi(s0)-chi(1)T. Moreover, a linear correlation between chi(1) and chi(s0) for increasing hole concentration is displayed. A temperature T-chi=(dchi(s0)/dchi(1)) independent of hole doping characterizes this scaling. Comparison with other cuprates of the literature (La2-xSrxCuO4, Tl2Ba2CuO6+delta, and Bi2Sr2CaCu2O8+delta), over the same overdoped range, shows similarities with above results. These nonconventional metal features will be discussed in terms of a singular narrow-band structure.

【 授权许可】

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