Exploring the influence of magnetism and coherence in the electron-doped Hubbard model through photoemission and transport simulations

ORAL

Abstract

Using unbiased determinant quantum Monte Carlo simulations, we report the emergence of "hot spots" in the electron-doped Hubbard model at the locations where the Fermi surface intersects the antiferromagnetic zone boundary. In transport measurements, we find a concave curvature in the resistivity, with a significantly lower value compared to results from hole-doped simulations. Taken together with measurements of the specific heat, our results indicate that the electron-doped Hubbard model has a higher degree of coherence than its hole-doped counterpart. Our photoemission and transport simulations correspond closely to experimental observations, which indicates that these phenomena can be attributed to the intricate interplay between correlations and particle-hole asymmetric band structure.

* This work at Stanford and SLAC (BM, WOW, JKD, TPD) was supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Materials Sciences and Engineering. EWH was supported by the Gordon and Betty Moore Foundation EPiQS Initiative through the grants GBMF 4305 and GBMF 8691. Computational work was performed on the Sherlock cluster at Stanford University and on resources of the National Energy Research Scientific Computing Center, supported by the U.S. DOE, Office of Science, under Contract no. DE-AC02-05CH11231.

Presenters

  • Brian Moritz

    SLAC National Accelerator Laboratory

Authors

  • Brian Moritz

    SLAC National Accelerator Laboratory

  • Wen O Wang

    Stanford University

  • Jixun K Ding

    Stanford University

  • Edwin W Huang

    University of Notre Dame

  • Thomas P Devereaux

    Stanford University