- Tytuł:
- Bond-Selective Excitation and Following Displacement of Ge Atoms in $GeTe//Sb_{2}Te_{3}$ Superlattice
- Autorzy:
-
Makino, K.
Tominaga, J.
Kolobov, A.
Fons, P.
Hase, M. - Powiązania:
- https://bibliotekanauki.pl/articles/1489973.pdf
- Data publikacji:
- 2012-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
78.47.J-
63.22.Np
63.20.kd
63.20.kk - Opis:
- Phase change random access memory devices made from chalcogenides compounds, such as $Ge_{2}Sb_{2}Te_{5}$, have attracted much attention because of their high-speed read-write and low power consumption capabilities. The phase change in $Ge_{2}Sb_{2}Te_{5}$ is thought to be characterized by the displacement of Ge atoms, accompanying relaxation of surrounding Sb and Te atoms. Here we examine a new approach, that is the manipulation of Ge-Te bonds using linearly-polarized femtosecond near-infrared optical pulses. As a result, p-polarized pump pulses are found to be more effective in inducing the precursor of phase change, probably due to the atomic arrangements along the unique axis of the superlattice structure.
- Źródło:
-
Acta Physica Polonica A; 2012, 121, 2; 336-339
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł