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Institute for Condensed Matter Theory Seminar: "Incipient order in the strange metal of the Hubbard model

Event Type
The Institute for Condensed Matter Theory
ESB 190
Oct 4, 2021   12:00 pm  
Edwin Huang, U. of Illinois Urbana Champaign
Janice Benner
Originating Calendar
Physics - Institute for Condensed Matter Theory Seminar

The Hubbard model is the paradigmatic model of strongly correlated electron systems. Over the past several years, advanced numerical techniques have led to considerable progress in determining the ground state phases of the model, revealing spin stripe order, charge stripe order, and d-wave superconductivity as the dominant players. In this talk, I will discuss numerically exact determinantal quantum Monte Carlo calculations demonstrating how the interplay of these orders persists to temperatures above the onset of the pseudogap and where transport is strange metallic. At these elevated temperatures, the model exhibits surprisingly robust fluctuating spin and charge stripes and short-ranged d-wave pairing correlations. These findings are reminiscent of several recent X-ray scattering experiments on cuprates finding indications of charge order outside the pseudogap regime. Taken together, the experimental and theoretical evidence suggest that the strange metal contains substantial local correlations that resemble the system's low temperature ordering tendencies.

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