Charge-density-wave ordering in the metal-insulator transition compound PrRu4P12

Article

关键词: FERMI-SURFACE;    HIGH-PRESSURE;    SUPERCONDUCTIVITY;    PHASE;    SKUTTERUDITES;    PHOSPHIDES;    PRFE4P12;    PR;   

DOI  :  10.1103/PhysRevB.70.153105

来源: SCIE

【 摘 要 】

X-ray and electron diffraction measurements on the metal-insulator (M-I) transition compound PrRu4P12 have revealed a periodic ordering of charge density around the Pr atoms. It is found that the ordering is associated with the onset of a low temperature insulator phase. These conclusions are supported by the facts that the space group of the crystal structure transforms from Im (3) over bar to Pm (3) over bar below the M-I transition temperature and also that the temperature dependence of the superlattice peaks in the insulator phase follows the squared BCS function. The M-I transition could be originated from the perfect nesting of the Fermi surface and/or the instability of the f electrons.

【 授权许可】

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