Nonlinear conversion dynamics from self-trapped exciton states to a macroscopic photoinduced phase in strongly correlated organic radical crystals | Zendy

Ikufumi Katayama | Zendy; Toyoki Kon | Zendy; Kei Mitarai | Zendy; Jun Takeda | Zendy

Open Access

Nonlinear conversion dynamics from self-trapped exciton states to a macroscopic photoinduced phase in strongly correlated organic radical crystals

Author(s) -

Ikufumi Katayama,

Toyoki Kon,

Kei Mitarai,

Jun Takeda

Publication year - 2009

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.80.092103

Subject(s) - excited state , exciton , luminescence , phase transition , materials science , raman scattering , excitation , photoluminescence , molecular physics , condensed matter physics , raman spectroscopy , physics , atomic physics , optics , optoelectronics , quantum mechanics

Nonlinear conversion from self-trapped exciton (STE) states with local lattice distortions to a macroscopic photoinduced phase has been investigated in strongly correlated organic radical 1,3,5-trithia-2,4,6-triazapentalenyl crystals through luminescence and Raman-scattering measurements. The two-photon luminescence from STEs in the diamagnetic phase shows a quenching and a redshift with a clear threshold excitation photon density. The redshift directly represents a change in the local potential surface for the excited states, which stabilizes the excited domain and subsequently accelerates the macroscopic phase transition. The results strongly demonstrate that the local lattice distortions due to the STEs are the trigger for the photoinduced phase transition

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research