Extended phase diagram of RNiC2 family: Linear scaling of the Peierls temperature

Article

关键词: CHARGE-DENSITY-WAVE;    MAGNETIC-PROPERTIES;    NEUTRON-DIFFRACTION;    RARE-EARTH;    TRANSITION;    ANTIFERROMAGNETISM;    SUPERCONDUCTIVITY;    CARBIDES;    HEAT;    ER;   

DOI  :  10.1103/PhysRevB.97.041103

来源: SCIE

【 摘 要 】

Physical properties for the late-fanthanide-based RNiC2 (R = Dy, Ho, Er, and Tm) ternary compounds are reported. All the compounds show antiferromagnetic ground state with the Neel temperature ranging from 3.4 K for HoNiC2 to 8.5 K for ErNiC2. The results of the transport and galvanomagnetic properties confirm a charge density wave state at and above room temperature with transition temperatures T-CDW = 284, 335, 366, and 394 K for DyNiC2, HoNiC2, ErNiC2, and TmNiC2, respectively. The Peierls temperature T-CDW scales linearly with the unit cell volume. A similar linear dependence has been observed for the temperature of the lock-in transition T-1 as well. Beyond the intersection point of the trend fines, the lock-in transition is no longer observed. In this Rapid Communication we demonstrate an extended phase diagram for the RNiC2 family.

【 授权许可】

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