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Three Body bound-states and the development of odd frequency pairing

P. Coleman·E. Miranda·A. Tsvelik
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Abstract

We propose that the development of odd-frequency superconductivity is driven by the collective formation of neutral three body bound-states. Using a three-body bound-state ansatz we develop a mean-field theory for odd-frequency pairing within the Kondo Lattice model. Three body bound-state formation leads to the formation of a gapless band of fermions with a neutral, spinless Fermi surface. We discuss the low energy excitations of these modes, suggesting them as a possible explanation for the absence of anisotropy in the thermal conductivity of heavy fermion superconductors.

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P. Coleman, E. Miranda, A. Tsvelik. 1994-06-21. Three Body bound-states and the development of odd frequency pairing. https://doi.org/10.1103/physrevlett.74.1653

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