Berlin 2005 – scientific programme
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TT: Tiefe Temperaturen
TT 4: Symposium Superconducting Cuprates
TT 4.3: Invited Talk
Friday, March 4, 2005, 14:45–15:15, TU H104
Angle-Resolved Photoemission Spectroscopy of High-Tc Superconductors: Identifying the Pairing Boson — •Sergey Borisenko — Leibniz-Institute for Solid State and Materials Research, IFW-Dresden, Helmholtzstrasse 20, D-01069, Dresden
The search for the pairing mechanism in High-Temperature Superconducting cuprates has converged to the choice between the electron-phonon and electron-electron interactions. This dilemma remains one of the main problems of the modern condensed matter physics. We study HTSC using the Angle-Resolved Photoemission Spectroscopy. Due to the recent improvement of the resolution, this method allows to detect the "fingerprints" of the coupling between the electrons and bosonic excitations conceivably responsible for the pairing. Analysing the momentum, doping and temperature dependences of the electron-boson coupling effects in Bi-based cuprates we make an attempt to identify the pairing boson in high-Tc superconductors.