Large Electron-Phonon Coupling at an Interface

D.-A. Luh; T. Miller; J. J. Paggel; T.-C. Chiang

doi:10.1103/PhysRevLett.88.256802

Large Electron-Phonon Coupling at an Interface

D.-A. Luh, T. Miller, J. J. Paggel, and T.-C. Chiang

Phys. Rev. Lett. 88, 256802 – Published 5 June 2002

Abstract

The strength of electron-phonon coupling in atomically uniform films of Ag on Fe is determined by angle-resolved photoemission from quantum well states in these films over a wide temperature range. As the film thickness is reduced, contributions from the surface and interface should become more important, and, experimentally, a large enhancement with superimposed quantum oscillations is observed. An analysis of the quantum oscillations indicates that this large enhancement is an interface effect.

Received 30 August 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.256802

Authors & Affiliations

D.-A. Luh^1,2, T. Miller^1,2, J. J. Paggel³, and T.-C. Chiang^1,2,*

¹Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080
²Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, 104 South Goodwin Avenue, Urbana, Illinois 61801-2902
³Freie Universität Berlin, Institut für Experimentalphysik, 14195 Berlin, Germany