Local response to light excitation in the charge-ordered phase of (EDO-TTF) 2 SbF 6 - ENSTA Paris - École nationale supérieure de techniques avancées Paris Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2015

Local response to light excitation in the charge-ordered phase of (EDO-TTF) 2 SbF 6

M. Servol
Eric Collet
Hervé Cailleau
Loic Toupet
Davide Boschetto
Alain Moréac
Maciej Lorenc

Résumé

The family of materials (EDO-TTF)2XF6 represents quasi-one-dimensional ¼ filled systems exhibiting insulator-to-metal (I-M) phase transition at thermal equilibrium. (EDO-TTF)2PF6 is known to undergo a photoinduced I-M conversion with cooperative response to light excitation. Here we use femtosecond pump-probe experiments to study the photoresponse of (EDO-TTF)2SbF6 made of a larger counter-anion SbF6 compared to the well studied (EDO-TTF)2PF6. In the early stage of the photoinduced process, we reveal a multi-component coherent oscillating feature. The evolution of this feature with excitation density and temperature points to the local nature of the photoswitching in (EDO-TTF)2SbF6. At longer timescale, we did not detect the features associated with the transformation to the M phase, albeit observed in the PF 6 derivative. We propose a scenario whereby the bigger size of the counter-anion in (EDO-TTF)2SbF6 hinders the establishment of this transformation at macroscopic scale.
Fichier principal
Vignette du fichier
Text.pdf (521 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01168113 , version 1 (25-06-2015)
hal-01168113 , version 2 (05-05-2017)

Identifiants

Citer

M. Servol, Nicolas Moisan, Eric Collet, Hervé Cailleau, Wawrzyniec Kaszub, et al.. Local response to light excitation in the charge-ordered phase of (EDO-TTF) 2 SbF 6. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2015, 92 (2), pp.024304. ⟨10.1103/PhysRevB.92.024304⟩. ⟨hal-01168113v1⟩
683 Consultations
233 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More