2021/01/04 by M. Revelli Beaumont, Marco Beaumont, P. Hemme +12
Materials Science · Physics and Astronomy · #Condensed matter physics #Crossover #Fermi Gamma-ray Space Telescope #Fermi liquid theory #Iron-based superconductors research #Magnetism in coordination complexes #Materials science #Metal #Nanoparticle #Nanotechnology #Optics #Organic and Molecular Conductors Research #Phase (matter) #Phonon #Physics #Plateau (mathematics) #Quantum mechanics #Raman scattering #Raman spectroscopy #Scattering #Signature (topology) #Superconductivity #cond-mat.str-el
paper · pdf · doi:10.1088/1361-648x/abd813
published as J. Phys.: Condens. Matter 33 125403(2021)
openalex publication_date 2021/01/04 · openalex created_date 2021/01/18 · arxiv created 2021/01/23 · arxiv updated 2021/01/26 · openalex updated_date 2026/08/05
Abstract κ ‐(BEDT‐TTF) 2 Cu(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) 2 Cu(NCS) 2 exhibit anomalies at 50 K associated to the crossover from a bad metal to a Fermi liquid whose origins are discussed.