| Autor: |
Tohyama, Takami, Shinjo, Kazuya, Tsutsui, Kenji, Kenji, Tsutsui |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Journal of Physics: Conference Series. 2164:012049 |
| ISSN: |
1742-6588 |
| Popis: |
We investigate momentum-dependent transient spin dynamics after photoirradiation in a two-dimensional Mott insulator described by a half-filled Hubbard model on a square lattice by using a numerically exact-diagonalization technique. We find a temporal oscillation in the static spin structure factor of a square-root 18 times square-root 18 periodic lattice. The oscillation exhibits an antiphase behavior between, for example, two orthogonal momentum directions parallel and perpendicular to the electric field of a pump pulse. The origin of the antiphase oscillation is attributed to a photoexcited wave function that has overlap with eigenstates producing the B1g bimagnon Raman intensity. Observing such antiphase oscillations will be a big challenge for time-resolved resonant elastic x-ray scattering experiments. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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