Doping-driven pseudogap-metal-to-metal transition in correlated electron systems

TL;DR

This paper demonstrates a doping-driven first-order transition from a pseudogap metal to a Fermi liquid in correlated materials, explaining various exotic phenomena observed in doped Mott systems.

Contribution

It provides an exact DMFT-based analysis of a doping-induced metal-to-metal transition in the Dimer Hubbard Model, linking it to complex phases in correlated materials.

Findings

Identification of a doping-driven first-order transition

Explanation of pseudogap and bad metal phenomena

Connection to exotic phases in correlated systems

Abstract

We establish that a doping-driven first-order metal-to-metal transition, from a pseudogap metal to Fermi Liquid, can occur in correlated quantum materials. Our result is based on the exact Dynamical Mean Field Theory solution of the Dimer Hubbard Model. This transition elucidates the origin of many exotic features in doped Mott materials, like the pseudogap in cuprates, incoherent bad metals, enhanced compressibility and orbital selective Mott transition. This phenomenon is suggestive to be at the roots of the many exotic phases appearing in the phase diagram of correlated materials.