ESPCI web site
Friday, May 22, at 2:00 pm (Paris time)
Room Charpak
Shrinking Fermi Liquid and Strange Metal behavior from Charge Density Fluctuations in superconducting cuprates
I shall discuss a proposal that attributes the strange metallic behavior of cuprates to the occurrence of very slow dynamical charge density fluctuations in these systems. These excitations have indeed been detected by means of resonant inelastic X-ray scattering. The main consequence of their slow dynamics is to endow the fermion quasiparticles with a linear-in-temperature scattering rate, responsible for the linear-in-temperature resistivity observed in cuprates, which is the hallmark of a strange-metal behavior. These slow collective excitation also contribute to the anomalous thermodynamic and thermal transport properties of theses systems. The rationale behind the theory, i.e., the presence of a slow boson, shall be critically analyzed, aiming at extending my proposal to other systems that display a strange-metal behavior.
