A hydrodynamical description for transport in the strange metal phase of cuprates

High temperature superconductors are strongly coupled systems which present a complicated phase diagram with many intertwined phases appearing at the same time. This makes it difficult to understand the mechanism which generates their singular transport properties (see e.g. [1]). Hydrodynamics, which mostly relies on the symmetries of the system without referring to any specific microscopic mechanism, constitutes a promising framework to analyze these materials.
In this talk I will show that in the strange metal phase of the cuprates, a whole set of transport coefficients are described by a universal hydrodynamic framework once one accounts for the effects of quantum critical charge density waves. I will compare the theoretical prediction with the measured DC transport properties of Bi-2201 close to optimal doping, proving the validity of our approach. Our argument can be used as a consistency check to understand the universality class governing the behavior of cuprate high temperature superconductors.


References:
[1] N. E. Hussey, "Phenomenology of the normal state in-plane transport properties of high-Tc cuprates" J. Phys: Condens. Matter 20 (2008) 123201
[2] A. Amoretti et al. "A hydrodynamical description for transport in the strange metal phase of cuprates", arXiv:1909.07991.