- Tytuł:
- Polaron dynamics on the nonlinear lattice in the Su-Schrieffer-Heeger approximation. Exact and approximate solutions
- Autorzy:
-
Astakhova, T.
Kashin, V.
Likhachev, V.
Vinogradov, G. - Powiązania:
- https://bibliotekanauki.pl/articles/1070603.pdf
- Data publikacji:
- 2016-03
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
71.38.-k
72.10.Di - Opis:
- We investigate the polaron dynamics on the nonlinear lattice with the cubic nonlinearity in the tight-binding approximation. The electron-phonon interaction is accounted in the Su-Schrieffer-Heeger approximation. The system of nonlinear partial differential equations is derived in the continuum approximation. It has an exact solution at a special relation between parameters of lattice nonlinearity α and electron-phonon interaction χ. An approximate analytical solution is obtained at arbitrary parameters α and χ. Results of the numeric simulations are in a good agreement with the analytical predictions in both cases. The range of parameter values, where theoretical formulae are valid, is determined.
- Źródło:
-
Acta Physica Polonica A; 2016, 129, 3; 334-339
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł