Electron-Phonon Interactions in Superconducting La1.84Sr0.16CuO4 Films

Heejae Shim; P. Chaudhari; Gennady Logvenov; Ivan Bozovic

doi:10.1103/PhysRevLett.101.247004

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Electron-Phonon Interactions in Superconducting La1.84Sr0.16CuO4 Films

Heejae Shim, P. Chaudhari, Gennady Logvenov, Ivan Bozovic

DOI 10.1103/PhysRevLett.101.247004 · Physical Review Letters

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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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La1.84Sr0.16CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	23.5	Pressure not reported	unknown