SIN and SIS tunneling in cuprates

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Abstract

We calculate the superconductor/insulator/normal-metal (SIN) and superconductor/insulator/superconductor (SIS) tunneling conductances for the spin-fermion model. We argue that at strong spin-fermion coupling, relevant to cuprates, both conductances have dip features near the threshold frequencies when a tunneling electron begins emitting propagating spin excitation. We argue that the resonance spin frequency measured in neutron scattering can be inferred from the tunneling data by analyzing the derivatives of SIN and SIS conductances.

Original languageEnglish (US)
Pages (from-to)R9241-R9244
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume61
Issue number14
DOIs
StatePublished - 2000

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