Clusterphysics
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Research Projects

 

Si45

 

The figure shows a Si45 cluster. Silicon is a semiconductor, which crystallizes in the diamond crystal structure. The atoms are tetra-coordinated. This is different in a cluster. The geometric structure is disordered and there are tetra- and penta-coordinated atoms. The particle has no band gap but is metallic. (Figure taken from J. Bai et al., J. Phys. Chem. A 2006, 110, 908.)

So much for the theory. It is more difficult to actually measure the geometric and electronic structure. Because properties can change with every atom, experiments need to be carried out on mass-separated clusters. This is the area of expertise of our group. 

 

 

 

 Projects

Time-resolved Photoelectron Spectroscopy


Konstanz

TRPES

New Cluster Materials


Konstanz

Clustermaterial 


Photoelectron Spectroscopy with Synchrotron Radiation


Swiss Light Source

SLSFirstPES
 

Cluster Deposition


Baltimore

Snowflakes 

New Cluster Compounds


Baltimore

 Clustercompounds

Electron Transport through Clusters


Rossendorf

Clustertransport
 

Free Electron Laser


Hamburg

Flash