Interpretation of Kondo experiments in a magnetic field

Schotte, K. D.; Schotte, U.

doi:10.1016/0375-9601(75)90386-2

Cited by 242 publications

(122 citation statements)

References 7 publications

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“…. In this case, the level crossing of the two lowest levels again occurs for H k h111i in the proposed CEF scheme, which is also a very similar feature to that of YbCo 2 Zn 20 .…”

Section: Analyses and Discussionmentioning

confidence: 51%

“…20) The dot-dashed lines in Figs. 3(b) and 3(c) are calculated curves using the resonant level model with S ¼ 1=2 and the Kondo temperature T K ¼ 1 K. The calculated C=T rapidly increases below about 1 K and approaches C=T $ 9 J/(K 2 Ámol) below 0.1 K. These features approximately explain the experimental results of C mag =T below about 1 K. The calculated temperature dependence of the magnetic entropy S mag also agrees well with the experimental result below $0:5 K, as shown in Fig.…”

Section: Analyses and Discussionmentioning

confidence: 99%

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Field-Induced Quadrupolar Ordered Phase for H∥<111> in Heavy-Fermion Compound YbCo₂Zn₂₀

et al. 2011

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Magnetic susceptibility, high-field magnetization up to 500 kOe, and specific heat in a wide temperature range from 0.06 to 300 K were measured for single crystals of the cubic heavy-fermion compound YbCo 2 Zn 20 in order to elucidate the electronic states of the compound at low temperatures. A strong increase in the magnetic specific heat in the form of C mag =T below $1 K is approximately explained by the resonant level model for S ¼ 1=2 with the Kondo temperature T K ¼ 1 K, and an extremely large C mag =T ' 8 J/(K 2 Ámol) below about 0.2 K is explained by considering the magnetic entropy of the doublet ground state in the 4f crystalline electric field (CEF) scheme of an Yb 3þ ion, which corresponds to an extremely large electronic specific heat coefficient. The field-induced ordered phase for H k h111i, which has recently been found by low-temperature magnetization measurements, was precisely studied by electrical resistivity and specific heat measurements, and was observed in a limited angular range around the h111i direction. On the basis of CEF analyses, the level crossing of the two lowest CEF states is essentially important to understand the field-induced ordered phase, which can be reduced to a field-induced antiferro-quadrupolar ordering based on the À 3 -type quadrupole moment O 0 2 .

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“…. In this case, the level crossing of the two lowest levels again occurs for H k h111i in the proposed CEF scheme, which is also a very similar feature to that of YbCo 2 Zn 20 .…”

Section: Analyses and Discussionmentioning

confidence: 51%

Section: Analyses and Discussionmentioning

confidence: 99%

Field-Induced Quadrupolar Ordered Phase for H∥<111> in Heavy-Fermion Compound YbCo₂Zn₂₀

et al. 2011

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“…In particular, the maximum in C/T which seems to occur in the normal phase of non-magnetic heavy fermion compounds (HFC) [2,3] Lorentzian has been used to give a phenomenological representation of single-impurity Kondo systems [7]. We use here the sum of two Lorentzians of width ll and centered at e: = ±Eo which may represent a Kondo lattice with no dynamical interaction between particles [8].…”

Section: Introductionmentioning

confidence: 99%

Pressure dependence of the specific heat of CeAl3

Brodale

Fisher

Phillips

et al. 1986

Journal of Magnetism and Magnetic Materials

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“…According to the Kondo resonant-level model by Schotte and Schotte [14], the Kondo-impurity contribution C KI to the total specific heat per one mole of the impurities with effective spin S = 1/2 is described by the formula:…”

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confidence: 99%

Single-Ion Kondo Scaling of the Coherent Fermi Liquid Regime inCe1−xLaxNi2Ge2

et al. 2012

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Thermodynamic and transport properties of the La-diluted Kondo lattice CeNi2Ge2 were studied in a wide temperature range. The Ce-rich alloys Ce1−xLaxNi2Ge2 were found to exhibit distinct features of the coherent heavy Fermi liquid. At intermediate compositions (0.7 x 0.9) nonFermi liquid properties have been observed, followed by the local Fermi liquid behavior in the dilute limit. The 4f -electron contribution to the specific heat was found to follow the predictions of the Kondo impurity model both in the local as well as coherent regimes, with the characteristic Kondo temperature decreasing rapidly from about 30 K for the parent compound CeNi2Ge2 to about 1 K in the most dilute samples. The specific heat does not show any evidence for the emergence of a new characteristic energy scale related to the formation of the coherent Kondo lattice.

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Interpretation of Kondo experiments in a magnetic field

Cited by 242 publications

References 7 publications

Field-Induced Quadrupolar Ordered Phase for H∥<111> in Heavy-Fermion Compound YbCo₂Zn₂₀

Field-Induced Quadrupolar Ordered Phase for H∥<111> in Heavy-Fermion Compound YbCo₂Zn₂₀

Pressure dependence of the specific heat of CeAl3

Single-Ion Kondo Scaling of the Coherent Fermi Liquid Regime inCe1−xLaxNi2Ge2

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Interpretation of Kondo experiments in a magnetic field

Cited by 242 publications

References 7 publications

Field-Induced Quadrupolar Ordered Phase for H∥<111> in Heavy-Fermion Compound YbCo2Zn20

Field-Induced Quadrupolar Ordered Phase for H∥<111> in Heavy-Fermion Compound YbCo2Zn20

Pressure dependence of the specific heat of CeAl3

Single-Ion Kondo Scaling of the Coherent Fermi Liquid Regime inCe1−xLaxNi2Ge2

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Product

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Field-Induced Quadrupolar Ordered Phase for H∥<111> in Heavy-Fermion Compound YbCo₂Zn₂₀

Field-Induced Quadrupolar Ordered Phase for H∥<111> in Heavy-Fermion Compound YbCo₂Zn₂₀