Spin-stripes in the Hubbard model: a combined DMFT and Bethe-Salpeter analysis
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908996374364160 |
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| author | Mushkaev, Ruslan Petocchi, Francesco Hoshino, Shintaro Werner, Philipp |
| author_facet | Mushkaev, Ruslan Petocchi, Francesco Hoshino, Shintaro Werner, Philipp |
| contents | The Hubbard model is known to accommodate various electronic orders, including stripes, which are important for understanding the physics of cuprates. We study spin-stripe order in the square lattice Hubbard model as a function of doping and temperature, by solving the Bethe-Salpeter equation with the local vertex from dynamical mean field theory (DMFT), both inside and outside the antiferromagnetic phase. We find broad regions of horizontal/vertical spin stripes at low temperatures for the model with and without next-nearest neighbor hopping. Their wavelength depends on hole doping in a nonlinear fashion, and is highly sensitive to the ratio of nearest and next-nearest neighbor hoppings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_24439 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin-stripes in the Hubbard model: a combined DMFT and Bethe-Salpeter analysis Mushkaev, Ruslan Petocchi, Francesco Hoshino, Shintaro Werner, Philipp Strongly Correlated Electrons The Hubbard model is known to accommodate various electronic orders, including stripes, which are important for understanding the physics of cuprates. We study spin-stripe order in the square lattice Hubbard model as a function of doping and temperature, by solving the Bethe-Salpeter equation with the local vertex from dynamical mean field theory (DMFT), both inside and outside the antiferromagnetic phase. We find broad regions of horizontal/vertical spin stripes at low temperatures for the model with and without next-nearest neighbor hopping. Their wavelength depends on hole doping in a nonlinear fashion, and is highly sensitive to the ratio of nearest and next-nearest neighbor hoppings. |
| title | Spin-stripes in the Hubbard model: a combined DMFT and Bethe-Salpeter analysis |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2509.24439 |