Femtosecond Structural Dynamics in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>VO</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>during an Ultrafast Solid-Solid Phase Transition
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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.
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The record
- Venue
- Physical Review Letters
- Topic
- Transition Metal Oxide Nanomaterials
- Field
- Materials Science
- Canadian institutions
- Institut National de la Recherche Scientifique
- Funders
- —
- Keywords
- FemtosecondPhase transitionPhysicsMaterials scienceRutileCrystallographyCondensed matter physicsOpticsLaserChemistry
- Has abstract in OpenAlex
- yes