Effect of magnetic fluctuations on Raman scattering in {kappa}-(BEDT-TTF){sub 2}Cu(NCS){sub 2}

Journal Article · Wed Jul 01 00:00:00 EDT 1998 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.58.R599· OSTI ID:638792

Lin, Y; Eldridge, J E ^[1]; Wang, H H; Kini, A M; Kelly, M E; Williams, J M; Schlueter, J ^[2]

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1. Physics Department, University of British Columbia, Vancouver, B.C. V6T 1Z1 (Canada)
2. Chemistry and Materials Science Divisions, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The temperature dependence of the intensity and frequency of two intense features in the Raman spectrum of {kappa}-(BEDT-TTF){sub 2}Cu(NCS){sub 2} have been measured. The spectra were taken with a Fourier Raman spectrometer equipped with an infrared laser. The two lines are due to a strongly resonant {nu}{sub 9} (A{sub g}) doublet, and a sharp line due to {nu}{sub 60} (B{sub 3g}). The frequencies of these modes are observed to soften below 80 K, in the temperature range where antiferromagnetic spin fluctuations have been observed with NMR, providing evidence of interactions between the phonons and the magnetism. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 638792
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 2 Vol. 58; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROMAGNETIC MATERIALS
ELECTRON-PHONON COUPLING
FLUCTUATIONS
MAGNETIC PROPERTIES
MAGNETO-OPTICAL EFFECTS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
RAMAN SPECTRA
SPIN
TEMPERATURE RANGE 0065-0273 K