The transport properties of the enigmatic strange metal phase, which is often a parent state of correlated-electron superconductivity, continue to be challenging to understand theoretically. I will describe how disorder in electron interactions, a feature that should arise naturally in effective descriptions of doped or twisted correlated electron materials, can overcome constraints on transport scattering mechanisms imposed by experimental observations and fundamental theoretical principles. I will then present a simple theory of metallic quantum criticality that reproduces multiple aspects of the phenomenology of strange metals when solved at the saddle-point level. Going beyond such mean-field descriptions, I will present results from numerically exact large-scale simulations that uncover a microscopic basis for the origin of strange metal behavior at low temperatures, and also a mechanism for their universal ‘Planckian’ transport scattering rates that are of the order of k_B T / ℏ.
Zoom Link: https://icts-res-in.zoom.us/j/92271867844?pwd=pnGpuOS9gsimKqvqm1BOhxCNJLptjt.1
Meeting ID: 922 7186 7844
Passcode: 262627