The effect of spin fluctuations on two phonons lines in the Raman scattering from (ET) 2Cu (NCS) 2

• Published in: Synthetic metals Vol. 103; no. 1; pp. 2071 - 2072
• Main Authors: Lin, Y., Eldridge, J.E., Wang, H.H., Kini, A.M., Kelly, M.E., Williams, J.M., Schlueter, J.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Lausanne Elsevier B.V 24.06.1999; Amsterdam Elsevier Science; New York, NY
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Infrared and raman spectra and scattering; Lattice dynamics; Magnetic phase transitions; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Organic compounds, polymers; Organic conductors; Phonon states and bands, normal modes, and phonon dispersion; Phonons and vibrations in crystal lattices; Physics; Raman spectroscopy; Raman spectroscopy; Organic conductors; Magnetic phase transitions; Temperature dependence; Line shape; Thiocyanato complex; Spin fluctuations; Experimental study; Soft modes; Line intensity; Sulfur heterocycle; Raman scattering; Vibrational modes; Two phonon process; Copper complexes
• ISSN: 0379-6779; 1879-3290
• DOI: 10.1016/S0379-6779(98)00423-8

The temperature-dependence of the intensity and frequency of two intense features in the Raman spectrum of χ-(BEDT-TTF) 2[Cu(NCS) 2] have been measured. The frequencies of these modes were observed to soften below 80K, in the temperature range where antiferromagnetic fluctuations have been observed, providing evidence of interactions between the phonons and the magnetism.