Nonlinear temperature dependence of resistivity in single crystal Ag5Pb2O6

Article

关键词: TETRACYANOQUINODIMETHANE TTF-TCNQ;    HEAVY-FERMION;    CONDUCTIVITY;    SUPERCONDUCTIVITY;    OXIDE;    MGB2;    REO3;   

DOI  :  10.1103/PhysRevB.70.184523

来源: SCIE

【 摘 要 】

We measured electrical resistivity, specific heat and magnetic susceptibility of single crystals of highly conductive oxide Ag5Pb2O6, which has a layered structure containing a Kagome lattice. Both the out-of-plane and in-plane resistivity show T-2 dependence in an unusually wide range of temperatures up to room temperature. This behavior cannot be accounted for either by electron correlation or by electron-phonon scattering with high frequency optic phonons. In addition, a phase transition with a large diamagnetic signal was found in the ac susceptibility, which strongly suggests the existence of a superconducting phase below 48 mK.

【 授权许可】

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