Emergence of collective plasmon excitation in a confined one-dimensional electron gas
Artikel i vetenskaplig tidskrift, 2005

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.

ENERGIES

SURFACE

METAL

SPECTROSCOPY

NANOSHELLS

DENSITY-FUNCTIONAL THEORY

SCANNING TUNNELING MICROSCOPE

EMISSION

SYSTEMS

Författare

Shiwu Gao

Göteborgs universitet

Zhe Yuan

Chalmers, Teknisk fysik, Material- och ytteori

PHYSICAL REVIEW B

Vol. 72 12 art. no. 121406-

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1103/PhysRevB.72.121406