One-dimensional plasmon in an atomic-scale metal wire

Tadaaki Nagao, Shin Yaginuma, Takeshi Inaoka, Toshio Sakurai

研究成果: Article査読

97 被引用数 (Scopus)

抄録

We have measured one-dimensional (1D) plasmons in an atom wire array on the Si(557)-Au surface by inelastic scattering of a highly collimated slow electron beam. The angular dependence of the excitation energy clearly indicates the strong 1D confinement and free propagation of the plasma wave along the wire. The observed plasmon dispersion is explained very well by a quantum-mechanical scheme which takes into account dynamic exchange-correlation effects, interwire interactions, and spin-orbit splitting of the 1D bands. Although the qualitative feature of the plasmon dispersion is reminiscent of that of a high-density free-electron gas, we detected the substantial influence of electron correlation due to strong 1D confinement.

本文言語English
論文番号116802
ジャーナルPhysical review letters
97
11
DOI
出版ステータスPublished - 2006
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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