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Severing, A.; Thompson, J. D.; Canfield, Paul C.; Fisk, Z.; Riseborough, Peter S.

doi:10.1103/physrevb.44.6832

Cited by 134 publications

(64 citation statements)

References 18 publications

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“…To our knowledge only neutron data of TmSe [10] and SmB8 [11] have been published. TmSe is not well suited for a comparison since in thulium, as opposed to cerium, samarium and ytterbium, two magnetic 4f configurations are involved, and for SmB6 no statement can be made concerning the existence of a magnetic gap from the existing data [14]. However, the behaviour found in CesBi4Pt8 seems to be confirmed by preliminary CeNiSn [12] and YbB12 [13] data.…”

Section: Discussionmentioning

confidence: 66%

“…To address the possible appearance of a gap in the spin-spin correlation function and its relationship to the transport gap, we have developed a simple model which will be presented elsewhere [14]. The dynamic susceptibility x(Q, oJ) has been calculated within the framework of the spin-½ Anderson lattice model and we are able to show that gaps in the magnetic spectrum with A m > 2A can occur.…”

Section: Discussionmentioning

confidence: 99%

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Gap-like magnetic excitation in the neutron-scattering response of Ce3Bi4Pt3

Severing

Thompson

Canfield

et al. 1992

Journal of Alloys and Compounds

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CeaBi4Pt a is a mixed valence compound with a gap in its electronic excitation spectrum. An Arrhenius plot of resistivity gives p-exp(--A/T), where A--5 meV. Inelastic neutron scattering experiments on CeaBi4Pta and also the isostructural lanthanum analogue reveal a gap in the spin-spin correlation function of CeaBi4Pta. At low temperatures the magnetic gap Am= 12 meV. Above 50 K the gap fills, becoming indiscernible at 150 K.

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Section: Discussionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Gap-like magnetic excitation in the neutron-scattering response of Ce3Bi4Pt3

Severing

Thompson

Canfield

et al. 1992

Journal of Alloys and Compounds

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“…This family of compounds can be characterized as strongly correlated semiconductors due to the f or d character of the relevant electrons and includes F eSi [4], Ce 3 Bi 4 P t 3 [5][6][7], SmB 6 [8], Y bB 12 [9] and CeF e 4 P 12 [10].…”

Section: Introductionmentioning

confidence: 99%

Short-range antiferromagnetic correlations in Kondo insulators

Rappoport¹,

Figueira²,

Continentino³

2000

Physics Letters A

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We study the influence of short range antiferromagnetic correlations between local f -electrons on the transport and thermodynamic properties of Kondo insulators. We use a Kondo lattice model with an additional Heisenberg interaction between nearest neighboring f-moments, as first proposed by Coqblin et al. [1] for metallic heavy fermions. The inter-site magnetic correlations produce an effective bandwidth for the f -electrons. They are treated on the same footing as the local Kondo correlations such that two energy scales appear in our approach. We discuss the competition between these two scales on the physical properties.

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“…[4]; the round points are from the neutron data of Ref. [5]. Right axis: The diamond-shaped points represent the localized charge carrier as a function of temperature as calculated by the optical sum rule (Eq.…”

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confidence: 99%