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A Multi-Terahertz View of Ultrafast Charge Density Wave Dynamics in TiSe2

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Abstract

We track the collective terahertz free-carrier response of 1T-TiSe2 during femtosecond photo-induced melting and recovery of a charge density wave. The formation of charge order is highly sensitive to the transient excess carrier density, suggesting a strong excitonic influence.

© 2013 Optical Society of America

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