Probing Many-Body Interactions in High-Tc Superconductor Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta }$ using Time- and Angle-Resolved Photoemission
ORAL
Abstract
Laser-based time- and angle-resolved photoemission spectroscopy (trARPES) is a technique that uses an initial laser pulse to pump a system, and a second pulse to probe it by photoemission. By using trARPES on the high temperature superconductor, Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta }$, we open a window into its many-body quasiparticle interactions. Here we report on the effect of pumping on the quasiparticle band structure of Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta }$. We will discuss the dynamics of this effect, and its relation to the superconducting state.
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