title: Electron-phonon interactions in superconducting La1.84Sr0.16CuO4 films.
abstract: We have measured quasiparticle tunneling across a junction perpendicular to the superconducting copper oxide planes. The tunneling spectra show peaks in the density of states. There are 11 minima in the second derivative d2I/dV2, where I is the current and V the voltage, suggesting multiple boson-quasiparticle interactions. These minima match precisely with the published Raman scattering data, leading us to conclude that the relevant bosons in superconducting La1.84Sr0.16CuO4 films are phonons.
authors.affiliation: Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: Heejae
authors.initials: H
authors.lastname: Shim
authors.forename: P
authors.initials: P
authors.lastname: Chaudhari
authors.forename: Gennady
authors.initials: G
authors.lastname: Logvenov
authors.forename: Ivan
authors.initials: I
authors.lastname: Bozovic