Lattice Constants, Electrical Resistivity and Specific Heat of RNiC<sub>2</sub>

Murase, M; Tobo, Aya; Onodera, Hidetoshi; Hirano, Y.; Hosaka, Tadaaki; Shimomura, S.; Wakabayashi, N.

doi:10.1143/jpsj.73.2790

Cited by 47 publications

(54 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that the values of ρ 0 found by us are an order of magnitude larger than in the single crystals studied by Shimomura et al Also, in our polycrystalline sample, ρ 0 (T ) does not show any influence of the lock-in transition occurring at T lock−in ≈ 90 K as seen in resistivity measured along c axis of the single crystal. The polycrystalline nature of our sample is also responsible for a lower, in comparison to single crystal, value of T P (although the value of T P found by us converges with data reported by Murase et al 30 ). In the metallic regime above T P , the magnetoresistance (MR = ρ(H)−ρ0 ρ0 ) is negligibly small.…”

Section: Resultssupporting

confidence: 91%

Field-induced suppression of charge density wave in GdNiC2

et al. 2016

View full text Add to dashboard Cite

We report the specific heat, magnetic, magnetotransport and galvanomagnetic properties of polycrystalline GdNiC2. In the intermediate temperature region above TN = 20 K, we observe large negative magnetoresistance due to Zeeman splitting of the electronic bands and partial destruction of a charge density wave ground state. Our magnetoresistance and Hall measurements show that at low temperatures a magnetic field induced transformation from antiferromagnetic order to a metamagnetic phase results in the partial suppression of the CDW.

show abstract

Section: Resultssupporting

confidence: 91%

Field-induced suppression of charge density wave in GdNiC2

et al. 2016

View full text Add to dashboard Cite

show abstract

“…This downturn is visibly sharper for the antiferromagnetic ground states of NdNiC 2 and CeNiC 2 than in the case of PrNiC 2 , where instead of a long range of magnetic ordering, one observes a small magnetic anomaly at T * . Although the anomalies in the zero field resistivity have been reported beforehand 27 , the influence of magnetic field on transport properties, up to now, has been studied solely for the Nd-bearing compound 28,55 . Electrical resistivity measured in the presence of a magnetic field of µ 0 H = 9 T is shown as a red line in Figure 5, a b and c. The influence of magnetic field on ρ xx in the high temperature metallic state of each compound is negligibly small.…”

Section: Resultsmentioning

confidence: 99%

Magnetism and charge density waves inRNiC2(R=Ce,Pr,Nd)

et al. 2017

View full text Add to dashboard Cite

We have compared the magnetic, transport, galvanomagnetic and specific heat properties of CeNiC2, PrNiC2 and NdNiC2 to study the interplay between charge density waves and magnetism in these compounds. The negative magnetoresistance in NdNiC2 is discussed in terms of the partial destruction of charge density waves and an irreversible phase transition stabilized by the field induced ferromagnetic transformation is reported. For PrNiC2 we demonstrate that the magnetic field initially weakens the CDW state, due to the Zeeman splitting of conduction bands. However, the Fermi surface nesting is enhanced at a temperature related to the magnetic anomaly.

show abstract

“…The a and c lattice parameters obey Vegard’s law for the whole La concentration range, while the b parameter is almost constant up to x = 0.3 and linearly increases with further increasing La level. The rigid C-C dimers along the b direction are likely responsible for the negligible change in the b lattice constant for the lower La level10. The intermediate region, in which two phases with different La/Sm ratio are present, is shadowed on the diagram and the lattice parameters for the second, minority phase are shown by triangles.…”

Section: Resultsmentioning

confidence: 99%

“…Among the RNiC 2 compounds only two – SmNiC 2 and LaNiC 2 – exhibit properties other than an AFM ground state. Magnetism in RNiC 2 originates from the lanthanide sublattice and displays an AFM ordering in most cases (R = Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er, Tm)910. The exceptions, SmNiC 2 and LaNiC 2 , are a ferromagnet and a superconductor, respectively.…”

mentioning

confidence: 99%

Tuning the ferromagnetic phase in the CDW compound SmNiC2 via chemical alloying

Prathiba

Kim

Shin

et al. 2016

Sci Rep

View full text Add to dashboard Cite

We report a study on tuning the charge density wave (CDW) ferromagnet SmNiC2 to a weakly coupled superconductor by substituting La for Sm. X-ray diffraction measurements show that the doped compounds obey Vegard’s law, where La (Lu) alloying expands (shrinks) the lattice due to its larger (smaller) atomic size than Sm. In the series Sm1−xLaxNiC2, CDW transition (TCDW = 148 K) for SmNiC2 is gradually suppressed, while the ferromagnetic (FM) ordering temperature (TC) at 17 K slightly increases up to x = 0.3. For x > 0.3, TC starts to decrease and there is no signature that could be related with the CDW phase. Electrical resistivity, magnetic susceptibility and specific heat measurements point toward the possible presence of a FM quantum critical point (QCP) near x = 0.92, where the TC is extrapolated to zero temperature. Superconductivity in LaNiC2 (Tsc = 2.9 K) is completely suppressed with small amount of Sm inclusion near the proposed FM critical point, indicating a competition between the two ordered phases. The tunable lattice parameters via chemical substitution (La,Lu) and the ensuing change among the ordered phases of ferromagnetism, CDW and superconductivity underscores that SmNiC2 provides a rich avenue to study the rare example of a FM QCP, where the broken symmetries are intricately correlated.

show abstract

Lattice Constants, Electrical Resistivity and Specific Heat of RNiC₂

Cited by 47 publications

References 19 publications

Field-induced suppression of charge density wave in GdNiC2

Field-induced suppression of charge density wave in GdNiC2

Magnetism and charge density waves inRNiC2(R=Ce,Pr,Nd)

Tuning the ferromagnetic phase in the CDW compound SmNiC2 via chemical alloying

Contact Info

Product

Resources

About

Lattice Constants, Electrical Resistivity and Specific Heat of RNiC2

Cited by 47 publications

References 19 publications

Field-induced suppression of charge density wave in GdNiC2

Field-induced suppression of charge density wave in GdNiC2

Magnetism and charge density waves inRNiC2(R=Ce,Pr,Nd)

Tuning the ferromagnetic phase in the CDW compound SmNiC2 via chemical alloying

Contact Info

Product

Resources

About

Lattice Constants, Electrical Resistivity and Specific Heat of RNiC₂