Optical Properties and Internal Photoemission in Epitaxial Composites of CoSi2 Particles in Silicon

1991 ◽  
Vol 220 ◽  
Author(s):  
J. R. Jimenez ◽  
L. J. Schowalter ◽  
R. W. Fathauer
Keyword(s):  
Dielectric Constant ◽  
Optical Properties ◽  
Optical Absorption ◽  
Metal Particles ◽  
Surface Plasma ◽  
Plasmon Excitation ◽  
Surface Plasma Resonance ◽  
Internal Photoemission ◽  
Surface Plasmon Excitation ◽  
State Charge

ABSTRACTAn analysis of optical absorption and internal photoemission in epitaxial CoSi2 particles buried in silicon is carried out. The optical absorption is dominated by the well-known surface plasma resonance, and calculations of the surface plasma frequencies, using the previously measured dielectric constant of CoSi2, agree well with experiment. A model for the photoemission yield is presented which includes the effects of the surface plasmon excitation and decay. The model can reproduce the observed features of the yield in photoresponse experiments. A model for the replenishment of photoemitted carriers is also presented, in which the metal particles acquire a small steady-state charge under illumination.

Optical Properties of Sputtered Silver Granular Films

2005 ◽  
Vol 480-481 ◽  
pp. 287-292 ◽  
Author(s):  
S.E. Paje ◽  
F. Teran ◽  
J.M. Riveiro ◽  
J. Llopis ◽  
M.A. García ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Optical Absorption ◽  
Surface Morphology ◽  
Silver Clusters ◽  
Plasmon Excitation ◽  
Granular Films ◽  
Silver Films ◽  
Atomic Force ◽  
Atomic Force Micrographs

In this research we study optical absorption and morphology of silver films prepared with a sputtering method. Silver granular films are obtained on a glass substrate for films with thickness smaller than about 60 Å. Superficial silver clusters of around 100 nm in diameter are clearly seen in the atomic force micrographs. The absorption of these samples are characterized by plasmon excitation in the 450-650 nm spectral range, which differs from the known excitation of silver nanoparticles fabricated by different techniques. The optical absorption of silver granular films depend on sputtering conditions like substrate temperature or deposition rate and correlates with the surface morphology.

Surface Plasma Oscillations in Copper Films

1973 ◽  
Vol 28 (5) ◽  
pp. 662-667 ◽  
Author(s):  
Tadahiro Takigawa ◽  
Ken-ichiro Komaki ◽  
Fuminori Fujimoto
Keyword(s):  
Cross Section ◽  
Surface Plasmon ◽  
Plasma Radiation ◽  
Optical Data ◽  
Copper Films ◽  
Loss Peak ◽  
Surface Plasma ◽  
Plasmon Excitation ◽  
Energy Value ◽  
Surface Plasmon Excitation

An energy loss peak at 2 eV in the energy spectrum of electrons transmitted through thin copper films is observed and the variations of the energy value and of the intensity of the peak with film thickness are studied. The cross section for the surface plasmon excitation is calculated from optical data. The observed variations of the energy value and of the intensity of the peak show quantitative and qualitative agreements, respectively, with calculated values. It is concluded that the peak is mainly due to the surface plasmon which does not emit plasma radiation.

Dissociation of small metal particles induced by surface plasmon excitation with laser light

1989 ◽  
Vol 12 (1-4) ◽  
pp. 245-247 ◽  
Author(s):  
W. Hoheisel ◽  
U. Schulte ◽  
M. Vollmer ◽  
R. Weidenauer ◽  
F. Tr�ger
Keyword(s):  
Surface Plasmon ◽  
Laser Light ◽  
Metal Particles ◽  
Plasmon Excitation ◽  
Surface Plasmon Excitation ◽  
Small Metal Particles

Ablation of metal particles by surface plasmon excitation with laser light

1989 ◽  
Vol 36 (1-4) ◽  
pp. 664-672 ◽  
Author(s):  
W. Hoheisel ◽  
U. Schulte ◽  
M. Vollmer ◽  
R. Weidenauer ◽  
F. Träger
Keyword(s):  
Surface Plasmon ◽  
Laser Light ◽  
Metal Particles ◽  
Plasmon Excitation ◽  
Surface Plasmon Excitation

Manipulation of Metal Cluster Size Distributions with Laser Light

1990 ◽  
Vol 206 ◽  
Author(s):  
W. Hoheisel ◽  
F. Träger ◽  
U. Schulte ◽  
M. Vollmer
Keyword(s):  
Size Distribution ◽  
Laser Light ◽  
Metal Cluster ◽  
Metal Particles ◽  
Size Distributions ◽  
Plasmon Excitation ◽  
Desorption Process ◽  
Surface Plasmon Excitation ◽  
Desorption Mechanism ◽  
Small Metal Particles

ABSTRACTThe size and size distribution of small metal particles on surfaces can be manipulated with laser light. This has become possible by use of a nonthermal desorption process based on surface plasmon excitation in the particles. Most importantly, a considerable narrowing of a given size distribution on a surface can be achieved. Recent experiments on the desorption mechanism and the size manipulation are summarized.

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