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Femtosecond Structural Dynamics in VO2 during an Ultrafast Solid-Solid Phase Transition.

Abstract:
Femtosecond x-ray and visible pulses were used to probe structural and electronic dynamics during an optically driven, solid-solid phase transition in VO(2). For high interband electronic excitation (approximately 5 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.
Publication status:
Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
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Journal:
Physical Review Letters
Volume:
87
Issue:
23
Pages:
237401
Publication date:
2001-12-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
23266
Language:
English
Pubs id:
pubs:23266
UUID:
uuid:b8cddb7f-644b-4be3-9600-c4693cd61f7c
Local pid:
pubs:23266
Deposit date:
2012-12-19

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