- Tytuł:
- Novel Excitation-Density Dependence in Strongly Spin-Charge Coupled System
- Autorzy:
-
Ohara, J.
Kanamori, Y.
Ishihara, S. - Powiązania:
- https://bibliotekanauki.pl/articles/1490003.pdf
- Data publikacji:
- 2012-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
71.30.+h
71.10.-w
78.47.J-
78.20.Bh - Opis:
- Photoinduced spin-charge dynamics in strongly correlated electron systems is studied based on an extended double-exchange model. Solving a time-dependent Schrödinger equation with the Lanczos method, we trace the process of photoinduced melting of an antiferromagnetic charge order and analyze the excitation-density dependence on that. In the case of low density photoexcitation, both charge and spin orders are melted by photocarrier doping. This is interpreted with a conventional double-exchange mechanism. In the case of high density photoexcitation, however, the charge order is melted. The antiferromagnetic spin order is transiently weakened but after turnoff of the photoirradiation it recovers. This phenomenon strikingly differs from the weak photoexcitation case.
- Źródło:
-
Acta Physica Polonica A; 2012, 121, 2; 355-358
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł