| Autor: |
Madhumita Sarkar, Zala Lenarčič, Denis Golež |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Physical Review Research, Vol 6, Iss 3, p 033331 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2643-1564 |
| DOI: |
10.1103/PhysRevResearch.6.033331 |
| Popis: |
We investigate the emergence of bound states in chemically and photo-doped Mott insulators, mediated by spin and η-pairing fluctuations within both 2-leg ladder and 2D systems. To effectively describe the photo and chemically doped state on the same footings, we employ the Schrieffer-Wolff transformation, resulting in a generalized t-J model. Our results demonstrate that the binding energies and localization length in the chemically and photo-doped regimes are comparable, with η-pairing fluctuations not playing a crucial role. Furthermore, we show that manipulating the binding is possible through external periodic driving, a technique known as Floquet engineering, leading to significantly enhanced binding energies. We also roughly estimate the lifetime of photo-doped states under periodic driving conditions based on the Fermi golden rule. Lastly, we propose experimental protocols for realizing Hubbard excitons in cold-atom experiments. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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