- Tytuł:
- Quantum and Spontaneous Breakage of Translational Symmetry due to Light Excitation in Photo-Induced Structural Phase Transitions
- Autorzy:
- Nasu, K.
- Powiązania:
- https://bibliotekanauki.pl/articles/1489998.pdf
- Data publikacji:
- 2012-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
- 78.90.+t
- Opis:
- Real time quantum dynamics of the spontaneous translational symmetry breakage due to light excitation in the early stage of photo-induced structural phase transitions is reviewed under the guide of the Toyozawa theory, which is in exact compliance with the conservation law of the total momentum. At the Franck-Condon state, an electronic excitation just created by a visible photon is in a plane wave state, extended all over the crystal. While, after the lattice relaxation having been completed, it is localized as a new excitation. So, is there the shrinkage of the excitation wave function? No! The wave function never shrinks, but only the spatial (or inter lattice-site) quantum coherence (interference) of the excitation disappears, as the lattice relaxation proceeds. This is the breakage of translational symmetry.
- Źródło:
-
Acta Physica Polonica A; 2012, 121, 2; 347-349
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł