Extended phase diagram of RNiC2 family: Linear scaling of the Peierls temperature
Physical properties for the late-lanthanide-based RNiC2 (R = Dy, Ho, Er, and Tm) ternary compounds are reported. All the compounds show antiferromagnetic ground state with the Néel 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 TCDW = 284, 335, 366, and 394 K for DyNiC2, HoNiC2, ErNiC2, and TmNiC2, respectively. The Peierls temperature TCDW scales linearly with the unit cell volume. A similar linear dependence has been observed for the temperature of the lock-in transition T1 as well. Beyond the intersection point of the trend lines, the lock-in transition is no longer observed. In this Rapid Communication we demonstrate an extended phase diagram for the RNiC2 family.
Marta Roman, Judyta Strychalska-Nowak, Tomasz Klimczuk, Kamil Kolincio. (2018). Extended phase diagram of RNiC2 family: Linear scaling of the Peierls temperature, 97(4), 1-6. https://doi.org/10.1103/physrevb.97.041103
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