The low-frequency electronic excitations in double-walled armchair carbon nanotubes are studied within the random-phase approximation. The intertube atomic overlaps significantly affect the low-energy bands and thus enrich the low-frequency single-particle excitations and collective excitations. They induce more plasmon modes, reduce the plasmon strength, and change acoustic plasmons into optical plasmons. The predicted results could be verified by the electron-energy-loss spectroscopy.
|頁（從 - 到）||569-572|
|期刊||Physica E: Low-Dimensional Systems and Nanostructures|
|發行號||1-2 SPEC. ISS.|
|出版狀態||Published - 2006 五月|
All Science Journal Classification (ASJC) codes