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.

5 pages, 4 figures

References in corpus (5)

• Quantum Oscillations of Electrical Resistivity in an Insulator
• Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB${}_6$
• Canonical representation for electrons and its application to the Hubbard model
• Quantum oscillations in the zeroth Landau Level and the serpentine Landau fan
• Fourfold degenerate columnar-dimer ground state in square lattice antiferromagnets

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