Dresden 2003 – wissenschaftliches Programm
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TT: Tiefe Temperaturen
TT 3: Supraleitung: Elektronenstruktur, Phononen, Tunneln, Ordnungsparameter I
TT 3.10: Vortrag
Montag, 24. März 2003, 11:45–12:00, HSZ301
Dispersion Anomalies in Bilayer Cuprates and the Odd Symmetry of the Magnetic Resonance1 — •Matthias Eschrig1 and Michael Norman2 — 1Institut für Theoretische Festkörperphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany — 2Materials Science Division, Argonne National Laboratory, U.S.A.
We demonstrate that recent angle resolved photoemission data in bilayer cuprate superconductors imply that scattering of electrons between bonding and antibonding bands is strong compared to scattering within these bands. As a consequence, the resulting data can only be reproduced by a model which assumes that the electrons are interacting with a bosonic mode which is odd with respect to the layer indices. This odd symmetry is a unique property of the magnetic resonance observed by inelastic neutron scattering.
1Work Supported by the U.S. Dept. of Energy, Office of Science, under Contract No. W-31-109-ENG-38