- Tytuł:
- Orbital Correlations in Monolayer Manganites - From Spin t-J Model to Orbital t-J Model
- Autorzy:
-
Daghofer, M.
Oleś, A. M. - Powiązania:
- https://bibliotekanauki.pl/articles/2047308.pdf
- Data publikacji:
- 2007-04
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
75.10.Jm
75.30.Et
75.47.Lx - Opis:
- On the example of monolayer manganites we show that the theoretical ideas developed long ago along the derivation of the spin t-J model from the Hubbard model are nowadays very helpful in strongly correlated oxides with partly filled degenerate orbitals. We analyze a realistic orbital t-J model for e$\text{}_{g}$ electrons in La$\text{}_{1-x}$Sr$\text{}_{1+x}$MnO$\text{}_{4}$ monolayer manganites, and discuss the evolution of spin and orbital correlations under increasing doping by performing exact diagonalization of finite clusters, with electronic kinetic energy determined self-consistently at a finite temperature by classical Monte Carlo for t$\text{}_{2g}$ spins. Several experimental results are reproduced.
- Źródło:
-
Acta Physica Polonica A; 2007, 111, 4; 497-512
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł