Superfluid dome in the spatially modulated two-dimensional XY model
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914236990488576 |
|---|---|
| author | Song, Feng-Feng Chugh, Aditya Nuomin, Hanggai Kawashima, Naoki Wietek, Alexander |
| author_facet | Song, Feng-Feng Chugh, Aditya Nuomin, Hanggai Kawashima, Naoki Wietek, Alexander |
| contents | In strongly correlated electron systems, superconductivity and charge density waves often coexist in close proximity, suggesting a deeper relationship between these competing phases. Recent research indicates that these orders can intertwine, with the superconducting order parameter coupling to modulations in the electronic density. To elucidate this interplay, we study a two-dimensional XY model with a periodic modulation of the coupling strength in one spatial direction. Using a combination of tensor network methods and Monte Carlo simulations, we reveal a non-monotonic, dome-like dependence of $T_c$ on the modulation wavelength, with the peak $T_c$ shifting to longer wavelengths as the modulation strength grows. The origin of this phenomenon is traced back to an effective pinning of vortices in the valleys of the modulation, confirmed by a comparison to modulated $q$-state clock models. These findings shed new light on the phase behavior of intertwined superconducting and charge-ordered states, offering a deeper understanding of their complex interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_16068 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Superfluid dome in the spatially modulated two-dimensional XY model Song, Feng-Feng Chugh, Aditya Nuomin, Hanggai Kawashima, Naoki Wietek, Alexander Superconductivity Statistical Mechanics Strongly Correlated Electrons In strongly correlated electron systems, superconductivity and charge density waves often coexist in close proximity, suggesting a deeper relationship between these competing phases. Recent research indicates that these orders can intertwine, with the superconducting order parameter coupling to modulations in the electronic density. To elucidate this interplay, we study a two-dimensional XY model with a periodic modulation of the coupling strength in one spatial direction. Using a combination of tensor network methods and Monte Carlo simulations, we reveal a non-monotonic, dome-like dependence of $T_c$ on the modulation wavelength, with the peak $T_c$ shifting to longer wavelengths as the modulation strength grows. The origin of this phenomenon is traced back to an effective pinning of vortices in the valleys of the modulation, confirmed by a comparison to modulated $q$-state clock models. These findings shed new light on the phase behavior of intertwined superconducting and charge-ordered states, offering a deeper understanding of their complex interactions. |
| title | Superfluid dome in the spatially modulated two-dimensional XY model |
| topic | Superconductivity Statistical Mechanics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2506.16068 |