-A A +A
As phase-change materials such as Ge2Sb2Te5 (GST) undergo dramatic changes in material properties due to a fundamentally local change in bonding behavior, the ultimate speed limits of the atomic switching process offer hope both for ultrafast switching as well as non-adiabatic energy efficient routes for memory applications [1, 2]. To this end, we have carried out experiments using the freeelectron laser SACLA to explore sub-picosecond lattice dynamics in epitaxial GST (111) in response to 30 fs optical pump excitation. The SACLA x-ray beam was used to probe the lattice dynamics using a symmetric diffraction geometry.
Optical Society of America
Publication date: 
17 Sep 2014

Paul Fons, Kirill Mitrofanov, Kotaro Makino, Ryo Terashima, Alexander V Kolobov, Junji Tominaga, Alessandro Giussani, Raffella Calarco, Henning Riechert, Tetsuo Katayama, Takahiro Sato, Kanade Ogawa, Tadashi Togashi, Makina Yabashi, Muneaki Hase

Biblio References: 
Pages: 17p_C4_6
JSAP-OSA Joint Symposia