Short-range correlation effects on the plasmons in cylindrical tubules
Physical Review B - Condensed Matter and Materials Physics
American Physical Society
1361 - 1363
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We study the collective excitation of single and coaxial cylindrical tubules in the very low density regime. Exchange-correlation effects neglected in the random-phase approximation are shown to be important for plasmon modes. We also calculate the spectral weight function Im[1/ε(q,ω)] to investigate the collective modes as measured in electron energy-loss spectroscopy experiments.