Ultrafast Excited-State Dynamics of V3O5 as a Signature of a Photoinduced Insulator-Metal Phase Transition | Zendy

Nardeep Kumar | Zendy; Armando Rúa | Zendy; Junqiang Lu | Zendy; Félix E. Fernández | Zendy; Sergiy Lysenko | Zendy

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Ultrafast Excited-State Dynamics of V3O5 as a Signature of a Photoinduced Insulator-Metal Phase Transition

Author(s) -

Nardeep Kumar,

Armando Rúa,

Junqiang Lu,

Félix E. Fernández,

Sergiy Lysenko

Publication year - 2017

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.119.057602

Subject(s) - excited state , physics , atomic physics

The ultrafast elastic light scattering technique is applied to reveal the strong nonlinearity of V_{3}O_{5} associated with a photoinduced insulator-metal phase transition. Observation of time-domain relaxation dynamics suggests several stages of structural transition. We discuss the nonequilibrium processes in V_{3}O_{5} in terms of photoinduced melting of a polaronic Wigner crystal, coalescence of V-O octahedra, and photogeneration of acoustical phonons in the low-T and high-T phases of V_{3}O_{5}. A molecular dynamics computation supports experimentally observed stages of V_{3}O_{5} relaxation dynamics.

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