Low-temperature theory of inversion and quantum oscillations in Kondo insulators

Abstract

The half-filled Kondo lattice model is studied at low temperatures on simple cubic lattice using the self-consistent theory developed in Phys. Rev. B 96, 075115 (2017). It is found to have three distinct insulating phases in the temperature-hopping plane, namely, the strong coupling Kondo singlet (KS) phase, the inverted Kondo singlet (iKS) phase distinguished from the KS by inversion, and the antiferromagnetic (AFM) phase. The quasiparticle density of states across the inversion transition is noted to exhibit dimensional reduction, which can differentiate between the KS and iKS insulators in experiments. Magnetic quantum oscillations obtained in the iKS and AFM phases are found to show Lifshitz-Kosevich like behaviour with temperature as well as inverse hopping.

arXiv comment5 pages, 4 figures

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Cited by in corpus (3)

• A Mean-Field Study of Quantum Oscillations in Two-Dimensional Kondo Insulators
• Transmigration of Edge States with Interaction in Su-Schrieffer-Heeger Chain
• Theoretical investigation of quantum oscillations of specific heat in Kondo insulators