Effects of carrier concentration on the superfluid density of high-T-c cuprates

Article

关键词: MUON-SPIN-ROTATION;    MAGNETIC PENETRATION DEPTH;    NORMAL-STATE;    SUPERCONDUCTING PROPERTIES;    FERMI-SURFACE;    TEMPERATURE;    PSEUDOGAP;    SCATTERING;    HGBA2CA2CU3O8+DELTA;    HGBA2CUO4+DELTA;   

DOI  :  10.1103/PhysRevB.60.14617

来源: SCIE

【 摘 要 】

The absolute values and temperature, T, dependence-Of the in-plane magnetic penetration depth of La2-xSrxCuO4 and HgBa2CuO4+delta have been measured as a function of carrier concentration. We find that the superfluid density rho(s) changes substantially and systematically with doping. The values of rho(s)(0) are closely linked to the available low-energy spectral weight as determined by the electronic entropy just above T-c, and the magnitude of the initial slope of [rho(s)(T)/rho(s)(0)] increases rapidly with carrier concentration. The results are discussed in the context of a possible relationship between-rho(s) and the normal-state (or pseudo)energy gap. [S0163-1829(99)04546-4].

【 授权许可】

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