Anisotropic quasiparticle scattering in overdoped La-based cuprate superconductors: An angle resolved photoemission study
ORAL
Abstract
High-temperature superconductivity remains one of the outstanding unresolved problems of condensed matter physics. In the cuprate superconductors, a central part of the problem is to understand the unusual normal state properties. Here we present a new angle resolved photoemission spectroscopy (ARPES) study on the normal state of overdoped La-based cuprates. The pseudogap phase is found to vanish in a quantum critical point $x_c$ inside the superconducting dome. Momentum dependent quasiparticle scattering have been studied for doping concentrations larger than $x_c$. Comparison to angle-integrated bulk probes such as electrical transport measurements will be made.
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