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Superconductivity in the Anderson Lattice

B. R. Trees·D. L. Cox
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Abstract

Using an anisotropic hybridization matrix element, V($\vec k$), reflecting cubic symmetry at the ``rare-earth'' sites of the infinite U Anderson lattice, we calculate the bare quasiparticle scattering amplitude to order 1/N using slave Bosons and find significant differences with previous results under spherical symmetry. Due to exchange of density fluctuations, we find an instability. toward E$_g$ and T$_{1g}$ (even-parity) pairing.

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B. R. Trees, D. L. Cox. 1993-05-25. Superconductivity in the Anderson Lattice. https://arxiv.org/abs/cond-mat/9305031

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