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End and Central Plasmon Resonances in Linear Atomic Chains

Jun Yan ; Zhe Yuan (Institutionen för teknisk fysik, Material- och ytteori) ; Shiwu Gao
Phys. Rev. Lett. Vol. 98 (2007), p. 216602.
[Artikel, refereegranskad vetenskaplig]

The existence and nature of end and central plasmon resonances in a linear atomic chain, the 1D analog to surface and bulk plasmons in 2D metals, has been predicted by ab initio time-dependent density functional theory. Length dependence of the absorption spectra shows the emergence and development of collectivity of these resonances. It converges to a single resonance in the longitudinal mode, and two transverse resonances, which are localized at the ends and center of the atom chains. These collective modes bridge the gaps, in concept and scale, between the collective excitation of atomic physics and nanoplasmonics. It also outlines a route to atomic-scale engineering of collective excitations.

Nyckelord: PACS: 72.15.Nj, 71.45.Gm, 73.20.Mf

Denna post skapades 2007-12-21. Senast ändrad 2010-01-26.
CPL Pubid: 63761


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