Flat Club - Anna Tamai

20.10.2023 12:00 – 14:00

Many correlated electron systems with diverse magnetic and electronic ground states turn into bad metals at high temperature – that is their resistivity increases with temperature and shows no sign of saturation well beyond the Mott-Ioffe-Regel (MIR) limit. In this regime there are no quasiparticle-like excitations because with a coherence length below the Fermi wavelength, a particle like description is no longer appropriate.
I will discuss how quasiparticles evolves during this crossover in the model Fermi liquid Sr2RuO4. In contrast to common ARPES beliefs, I will show that these fast and furious quasiparticles eventually die not by losing spectral weight but by dissolving in the incoherent part of the spectrum via excessive broadening.

Reference: https://arxiv.org/abs/2308.02313

Lieu

Bâtiment: Ecole de Physique

Auditoire Stueckelberg
Pizza: 12:00, Start discussion: 12:30

entrée libre