Role of Inelastic Tunneling through the Insulating Barrier in Scanning-Tunneling-Microscope Experiments on Cuprate Superconductors
Metadata only
Datum
2006-09Typ
- Journal Article
ETH Bibliographie
yes
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Abstract
The tunneling path between the CuO2 layers in cuprate superconductors and a scanning-tunneling-microscope tip passes through a barrier made from other oxide layers. This opens up the possibility that inelastic processes in the barrier contribute to the tunneling spectra. Such processes cause one or possibly more peaks in the second derivative current-voltage spectra displaced by phonon energies from the density of states singularity associated with superconductivity. Calculations of inelastic processes generated by apical O phonons show good qualitative agreement with recent experiments reported by Lee et al. Further tests to discriminate between these inelastic processes and coupling to planar phonons are proposed. Mehr anzeigen
Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
Physical Review LettersBand
Seiten / Artikelnummer
Verlag
American Physical SocietyOrganisationseinheit
03571 - Sigrist, Manfred / Sigrist, Manfred
ETH Bibliographie
yes
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