Successive Transition in Rare-earth Intermetallic Compound GdNiC₂

Field-induced suppression of charge density wave in GdNiC2

“…While the small change of T N with applied field is consistent with the phase diagram of Hanasaki et al 35 , the transition between the different AF and PM phases (AF 1 -AF 2 and PM 1 -PM 2, see Fig. 1) could not be observed within the available measurement accuracy.…”

“…The results of specific heat measurements in the vicinity of the antiferromagnetic transition are shown in fig. 1 compared with the magnetic phase diagram proposed by Hanasaki et al 35 based on magnetizatin measurements. The temperature of a transition from paramagnetic (PM 1) to antiferromagnetic (AF 1) phase is almost unaffected by applied magnetic field up to ca.…”

“…GdNiC 2 shows a CDW transition with Peierls temperature T P = 205 K. Initially, the FS nesting occurs with slightly incommensurate wavevector q = 1 2 ; η; 0 , which evolves into a doubly commensurate value of q = 1 2 ; 1 2 ; 0 22 . A recent X-Ray diffuse scattering study of the satellite reflections 22 has shown that, in contrast to SmNiC 2 , the CDW in GdNiC 2 survives the transition to a magnetically ordered (AF) state at T N = 20 K. Owing to the rich phase diagram of GdNiC 2 35 , it becomes interesting to study the CDW response to the application of external magnetic field and the evolution of magnetic order. Here we report the magnetoresistance, Hall effect, magnetization and specific heat measurements and discuss the destructive influence of magnetic field and magnetic transitions on the CDW in GdNiC 2 .…”

Correlation between charge density waves and antiferromagnetism in Nd1−xGdxNiC2 solid solutions

“…The obtained T N values are in good agreement with those determined from the resistivity measurement. An additional minimum followed by a further increase is observed for most members from the Nd 1−x Gd x NiC 2 series and can be attributed to a spin-flop transition as reported for the GdNiC 2 compound 43,46 . Above T N , the entire series obeys the Curie-Weiss law.…”

Crossover from charge density wave stabilized antiferromagnetism to superconductivity in Nd1−xLaxNiC2 compounds

“…The magnetism in RNiC 2 , however originates entirely from the rare-earth sublattice through the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between local magnetic moments mediated by conducting electrons associated with the Ni atoms carrying no magnetic moment themselves 11,12 . With the exception R = (Y, La, Pr, Sm, Lu), all the RNiC 2 undergo an antiferromagnetic transition with Nel temperatures T N < 25 K [12][13][14][15][16][17][18][19][20] . Only a weak magnetic anomaly was observed for PrNiC 2 14,21 , while SmNiC 2 14 and LaNiC 2 16,[22][23][24][25] exhibit ferromagnetic and superconducting ground states, respectively.…”