CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Emergence of collective plasmon excitation in a confined one-dimensional electron gas

Shiwu Gao ; Zhe Yuan (Institutionen för teknisk fysik, Material- och ytteori)
PHYSICAL REVIEW B Vol. 72 (2005), 12, p. art. no. 121406.
[Artikel, refereegranskad vetenskaplig]

We present a theoretical study of the electronic excitation in a confined one-dimensional electron gas, which is utilized to model atomic chains created in recent experiments. The length dependence of the excitation spectra is obtained from the linear response theory within the random phase approximation and time-dependent density functional theory. As the length of the chains increases, the dipole excitation spectra show a transition from electron-hole pair excitations to collective plasmon excitation. The trend of the length-dependent plasmon resonance is predicted, and the nature of the plasmon resonance is also elaborated.

Nyckelord: DENSITY-FUNCTIONAL THEORY; SCANNING TUNNELING MICROSCOPE; NANOSHELLS; SPECTROSCOPY; ENERGIES; EMISSION; SYSTEMS; SURFACE; METAL



Denna post skapades 2007-10-29. Senast ändrad 2010-01-26.
CPL Pubid: 58950

 

Institutioner (Chalmers)

Institutionen för fysik (GU) (GU)
Institutionen för teknisk fysik, Material- och ytteori (1900-2015)

Ämnesområden

Ytor och mellanytor
Elektronstruktur
Struktur- och vibrationsfysik

Chalmers infrastruktur

Relaterade publikationer

Denna publikation ingår i:


Theoretical studies of collective electronic excitations in low-dimensional structures