Probing the pseudogap and beyond: Examining single-particle properties of the hole- and electron-doped Hubbard model

Wen O. Wang; Edwin W. Huang; Brian Moritz; Thomas P. Devereaux

doi:10.1103/mqz8-h38p

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Probing the pseudogap and beyond: Examining single-particle properties of the hole- and electron-doped Hubbard model

Wen O. Wang ^1,2,3,*, Edwin W. Huang ^4,5, Brian Moritz ², and Thomas P. Devereaux ^2,6,7,†

¹Department of Applied Physics, Stanford University, Stanford, California 94305, USA
²Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
³Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, USA
⁴Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
⁵Stavropoulos Center for Complex Quantum Matter, University of Notre Dame, Notre Dame, Indiana 46556, USA
⁶Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA
⁷Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA

^*Contact author: wenwang.physics@gmail.com
^†Contact author: tpd@stanford.edu

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Phys. Rev. B 114, 105126 – Published 17 August, 2026

DOI: https://doi.org/10.1103/mqz8-h38p

Abstract

We compute high-resolution angle-resolved photoemission spectroscopy of the Hubbard model using the unbiased determinant quantum Monte Carlo algorithm, revealing an asymmetry between electron and hole doping. Electron doping exhibits more coherent quasiparticles and stronger antiferromagnetic correlations compared to hole doping. At low doping, a nodal-antinodal dichotomy on the Fermi surface is observed, similar to cuprate experiments. The dichotomy reflects the momentum dependence of the Mott gap, as manifested in both the spectral function and the self-energy. For hole doping, we observe a transition toward the pseudogap, without signature of pocket formation. The simulated nuclear magnetic resonance pseudogap temperatures do not necessarily agree with the temperature determined by spectroscopy. These findings collectively suggest the pseudogap is a smooth crossover driven by strong correlations.

Physical Review B

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Probing the pseudogap and beyond: Examining single-particle properties of the hole- and electron-doped Hubbard model

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Probing the pseudogap and beyond: Examining single-particle properties of the hole- and electron-doped Hubbard model

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