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

页码：art. no. / 225701

页数：4

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