Kondo ground states and non-Fermi-liquid behavior in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Ce</mml:mi><mml:msub><mml:mi mathvariant="normal">Ni</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant="normal">Co</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi mathvariant="normal">Ge</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

Lee, B. K.; Hong, Jongbae; Kim, J. W.; Jang, Kwang-Ho; Mun, E. D.; Jung, Myung Hun; Kimura, S.; Park, Tuson; Park, J.-G.; Kwon, Y.S.

doi:10.1103/physrevb.71.214433

Cited by 17 publications

(7 citation statements)

References 35 publications

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“…Enhanced effective mass m * is one of the usual signatures of quantum criticality [1,2] and has been experimentally observed for instance in CeNi 1−x Ni x Ge 2 [34]. Hence, the enhanced Sommerfeld coefficients near x c ∼ 5.23 agree with the conclusion of the spectroscopic study about the vicinity a QCP, deep in the intermediate valence regime [12].…”

Section: Resultssupporting

confidence: 78%

Enhanced Sommerfeld coefficient near the quantum critical point in YbMn6Ge6−xSnx

Haraux

Eichenberger

Diop

et al. 2022

Solid State Communications

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Section: Resultssupporting

confidence: 78%

Enhanced Sommerfeld coefficient near the quantum critical point in YbMn6Ge6−xSnx

Haraux

Eichenberger

Diop

et al. 2022

Solid State Communications

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“…It is seen that the ρ m (T) data of CeCoGe 2 can be fitted to the lnT behavior above 100 K (plotted as a solid line in the inset of figure 1(a)), indicating a signature of Kondo scatterings [18] and being consistent with the earlier report [12].…”

Section: Electrical Resistivitysupporting

confidence: 89%

“…Besides, this material is the first Kondo system which has been clearly interpreted by the Coqblin-Schrieffer model with j = 5/2 [11]. However, Lee et al have pointed out a signature of the Kondo effect with a logarithmic temperature dependence, −lnT and a Fermi liquid behavior below 10 K with ρ = ρ 0 + AT 2 [12].…”

Section: Introductionmentioning

confidence: 85%

Electrical and thermal transport properties of intermetallicRCoGe₂(R= Ce and La) compounds

Ramachandran¹,

Chang²,

Kuo³

et al. 2014

J. Phys.: Condens. Matter

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To investigate the electronic structure of the intermetallic compound CeCoGe2, we performed electrical resistivity (ρ), Seebeck coefficient (S), and thermal conductivity (κ) measurements in a temperature range of 10-300 K. For comparison, the non-magnetic counterpart LaCoGe2 is also studied. It is found that CeCoGe2 exhibits a broad maximum in the S(T) near 75 K, at which the sudden drop in the ρ(T) is observed. Temperature-dependent electrical resistivity and the Seebeck coefficient of CeCoGe2 can be described well by a two-band model, which reveals the signature of Kondo scattering in CeCoGe2. On the other hand, a typical metallic-like behavior is seen in the non-magnetic LaCoGe2 from the ρ(T) and S(T) studies. Analysis of the thermal conductivity indicates that the electronic contribution dominates thermal transport above 100 K in both CeCoGe2 and LaCoGe2. In addition, it is found that the variation in low-temperature lattice thermal conductivity of CeCoGe2 as compared to that of LaCoGe2 is most likely due to the phonon-point-defect scattering.

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“…The change of J cf can be achieved simply by applying external pressure or introducing chemical dopants. For example, CeNiGe 2 was carefully studied to be an antiferromagnetic Kondo lattice compound [10]. By substituting Co for Ni, the antiferromagnetic ordering is suppressed and the Fermi liquid state is generated.…”

Section: Introductionmentioning

confidence: 99%

Substitution effect on the magnetic and transport properties of CeNi0.8−xMnxBi2

Kim

Lee

Adroja

et al. 2014

Journal of Applied Physics

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Kondo ground states and non-Fermi-liquid behavior inCeNi1−xCoxGe2

Cited by 17 publications

References 35 publications

Enhanced Sommerfeld coefficient near the quantum critical point in YbMn6Ge6−xSnx

Enhanced Sommerfeld coefficient near the quantum critical point in YbMn6Ge6−xSnx

Electrical and thermal transport properties of intermetallicRCoGe₂(R= Ce and La) compounds

Substitution effect on the magnetic and transport properties of CeNi0.8−xMnxBi2

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Kondo ground states and non-Fermi-liquid behavior inCeNi1−xCoxGe2

Cited by 17 publications

References 35 publications

Enhanced Sommerfeld coefficient near the quantum critical point in YbMn6Ge6−xSnx

Enhanced Sommerfeld coefficient near the quantum critical point in YbMn6Ge6−xSnx

Electrical and thermal transport properties of intermetallicRCoGe2(R= Ce and La) compounds

Substitution effect on the magnetic and transport properties of CeNi0.8−xMnxBi2

Contact Info

Product

Resources

About

Electrical and thermal transport properties of intermetallicRCoGe₂(R= Ce and La) compounds