Kondo Insulator: p-wave Bose Condensate of Excitons

Details Kondo Insulator: p-wave Bose Condensate of Excitons Kondo Insulator: p-wave Bose Condensate of Excitons

1997-06-17

arxiv.org/abs/cond-mat/9706165v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 encapsulated PostScript figures

Scientific paper

10.1103/PhysRevLett.79.2097

In the Anderson lattice model for a mixed-valent system, the $d-f$ hybridization can possess a $p$-wave symmetry. The strongly-correlated insulating phase in the mean-field approximation is shown to be a $p$-wave Bose condensate of excitons with a spontaneous lattice deformation. We study the equilibrium and linear response properties across the insulator-metal transition. Our theory supports the empirical correlation between the lattice deformation and the magnetic susceptibility and predicts measurable ultrasonic and high-frequency phonon behavior in mixed-valent semiconductors.

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