Two-electron ARPES signals from the same preformed pair are segregated at lower binding energy with unique momentum dependence due to conservation laws, providing generic fingerprints observable in any electron-boson coupled system.
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In the 2D Hubbard model, d-wave pairing is confined to superexchange frequencies with pair-forming processes at low frequencies and pair-breaking at higher ones, independent of the Hubbard U scale.
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Fingerprints of preformed pairs in two-electron angle-resolved photoemission spectroscopy
Two-electron ARPES signals from the same preformed pair are segregated at lower binding energy with unique momentum dependence due to conservation laws, providing generic fingerprints observable in any electron-boson coupled system.
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Dynamics of superconducting pairs in the two-dimensional Hubbard model
In the 2D Hubbard model, d-wave pairing is confined to superexchange frequencies with pair-forming processes at low frequencies and pair-breaking at higher ones, independent of the Hubbard U scale.