Possible observation of the signature of the bad metal phase and its crossover to a Fermi liquid in κ –(BEDT–TTF) 2 Cu(NCS) 2 bulk and nanoparticles by Raman scattering
Résumé
κ‐(BEDT‐TTF)2Cu(NCS)2 has been investigated by Raman scattering in both bulk and nanoparticle compounds. Phonon modes from 20 to 1600 cm−1 have been assigned. Focusing on the unexplored low frequency phonons, a plateau in frequencies is observed in the bulk phonons between 50 and 100 K and assigned to the signature of the bad metal phase. Nanoparticles of κ‐(BEDT‐TTF)2Cu(NCS)2 exhibit anomalies at 50 K associated to the crossover from a bad metal to a Fermi liquid whose origins are discussed.
Domaines
Chimie de coordination| Origine | Fichiers produits par l'(les) auteur(s) |
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