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.
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.
Please register on this doodle if you want to join for pizza!
The slides of this presentation can be downloaded here (PDF, 8MB)
Location: Stuckelberg, Ecole de Physique
Time: Friday 20 October 2023, 12:10 for pizza, 12:30 start discussion