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arXiv · 0912.2339

Tandem Pairing in Heavy Fermion Superconductors

Rebecca Flint·Piers Coleman
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Abstract

We examine the internal structure of the heavy fermion condensate, showing that it necessarily involves a d-wave pair of quasiparticles on neighboring lattice sites, condensed in tandem with a composite pair of electrons bound to a local moment, within a single unit cell. These two components draw upon the antiferromagnetic and Kondo interactions to cooperatively enhance the superconducting transition temperature. The tandem condensate is electrostatically active, with a small electric quadrupole moment coupling to strain that is predicted to lead to a superconducting shift in the NQR frequency.

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Rebecca Flint, Piers Coleman. 2010-05-07. Tandem Pairing in Heavy Fermion Superconductors. https://doi.org/10.1103/physrevlett.105.246404

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