Spectral signatures of spin textures and the emergence of a pseudogap
Abstract
Strongly correlated solids exhibit phenomena -- from Mott localization to high-temperature superconductivity -- that escape conventional band theory. Efforts to address this unconventional physics have been typically cast in the language of Green's function theories, with the associated self-energies capturing strong correlations beyond the reach of mean-field theories. Here, we underscore that frequency- and momentum-dependent self-energies emerge also from mean-field solutions that break translational symmetry, and that these self-energies can display the characteristic fingerprints of strong correlations for certain, physically meaningful, spatial patterns. In the paradigmatic case of the 2D Hubbard model, we find that already at the mean-field level the doped antiferromagnet develops, in addition to long-range ordered stripes, many quasi-degenerate self-consistent solutions with antiferromagnetic textures organized into antiphase domains separated by hole-rich interfaces of convoluted shape, reminiscent of the phase-separation scenario. Remarkably, these solutions map into spectral functions that display very distinctively the phenomenology of the pseudogap, including the nodal-antinodal dichotomy, Fermi arcs, and a complementary Luttinger surface. The result is a conceptually simple description of such a complex phenomenon, where a pseudogap emerges as the momentum-space spectral portrait of the real-space interplay between antiferromagnetic domains and their metallic interfaces.
Related
- Nonlinear Interaction and Topological Selection Rules in two Skyrmion Merging: Emergence of Skyrmionium Textures
- Zeeman Spin Photocurrents without Spin Textures
- Spin swapping mediated by spin-orbital textures in centrosymmetric multiorbital materials
- Spin textures at the Fermi surface of ferromagnets and associated torque
- Exact admissibility radii for the lattice topological charge of quantum spin textures
BibTeX
@misc{quinzi2026spectral,
title = {{Spectral signatures of spin textures and the emergence of a pseudogap}},
author = {Matteo Quinzi and Andrea Pintus and Tommaso Chiarotti and Massimo Capone and Nicola Marzari},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.19269},
eprint = {2610.19269},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.19269},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Spectral signatures of spin textures and the emergence of a pseudogap
AU - Matteo Quinzi
AU - Andrea Pintus
AU - Tommaso Chiarotti
AU - Massimo Capone
AU - Nicola Marzari
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2610.19269
UR - https://arxiv.org/abs/2610.19269
AB - Strongly correlated solids exhibit phenomena -- from Mott localization to high-temperature superconductivity -- that escape conventional band theory. Efforts to address this unconventional physics have been typically cast in the language of Green's function theories, with the associated self-energies capturing strong correlations beyond the reach of mean-field theories. Here, we underscore that frequency- and momentum-dependent self-energies emerge also from mean-field solutions that break translational symmetry, and that these self-energies can display the characteristic fingerprints of strong correlations for certain, physically meaningful, spatial patterns. In the paradigmatic case of the 2D Hubbard model, we find that already at the mean-field level the doped antiferromagnet develops, in addition to long-range ordered stripes, many quasi-degenerate self-consistent solutions with antiferromagnetic textures organized into antiphase domains separated by hole-rich interfaces of convoluted shape, reminiscent of the phase-separation scenario. Remarkably, these solutions map into spectral functions that display very distinctively the phenomenology of the pseudogap, including the nodal-antinodal dichotomy, Fermi arcs, and a complementary Luttinger surface. The result is a conceptually simple description of such a complex phenomenon, where a pseudogap emerges as the momentum-space spectral portrait of the real-space interplay between antiferromagnetic domains and their metallic interfaces.
ER -