Femtosecond structural dynamics in VO2 during an ultrafast solid-solid phase transition -: art. no. 237401

被引：1071

作者：

Cavalleri, A ^{[1
]}

Tóth, C

Siders, CW

Squier, JA

Ráksi, F

Forget, P

Kieffer, JC

机构：

[1] Univ Calif San Diego, La Jolla, CA 92093 USA

[2] Opt X Inc, Lake Forest, CA 92630 USA

[3] Univ Quebec, INRS Energie & Mat, Varennes, PQ, Canada

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.87.237401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Femtosecond x-ray and visible pulses were used to probe structural and electronic dynamics during an optically driven, solid-solid phase transition in VO2. For high interband electronic excitation (similar to5 x 10(21) cm(-3)), a subpicosecond transformation into the high-T, rutile phase of the material is observed, simultaneous with an insulator-to-metal transition. The fast time scale observed suggests that, in this regime, the structural transition may not be thermally initiated.

引用

页码：237401 / 1

页数：4

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