Femtosecond x-ray measurement of ultrafast melting and large acoustic transients

被引：201
|
作者：
Sokolowski-Tinten, K [1 ]
Blome, C
Dietrich, C
Tarasevitch, A
von Hoegen, MH
von der Linde, D
Cavalleri, A
Squier, J
Kammler, M
机构：
[1] Univ Essen Gesamthsch, Inst Laser & Plasmaphys, D-45117 Essen, Germany
[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA
[3] Univ Calif San Diego, La Jolla, CA 92093 USA
[4] Univ Hannover, Inst Halbleitertechnol, D-30167 Hannover, Germany
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 22期
关键词：
D O I：
10.1103/PhysRevLett.87.225701
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Time-resolved x-ray diffraction with ultrashort (approximate to 300 fs), multi-keV x-ray pulses has been used to study the femtosecond laser-induced solid-to-liquid phase transition in a thin crystalline layer of germanium. Nonthermal melting is observed to take place within 300-500 fs. Following ultrafast melting we observe strong acoustic perturbations evolving on a picosecond time scale.
引用
收藏
页码：art. no. / 225701
页数：4
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