B04 – Control of the properties of clusters using external fields

Funding period: 2008 – 2011

Principal investigator: Gerd Ganteför

Scientific staff: Christian Braun,  Matthias Götz, Yuan Luo, Susanne Pfeifer, Sebastian Proch, Carsten Vetter

In contrast to atoms, molecules and solids, small clusters with n = 3 - 100 atoms may respond to external fields with dramatic changes of electronic and geometric structure. There is a delicate energy balance between surface and bulk binding contributions determining the most stable isomer out of many possible geometric structures. A small force can alter the balance in favor of another isomer. To study this effect unique to clusters, free size-selected clusters are exposed to static magnetic fields or laser radiation and structural changes are detected using photoelectron spectroscopy.

For further information please also refer to the group website: AG Ganteför.

List of publications

2011

  • K. Koyasu, C. Braun, S. Proch, and G. Ganteför, Time-resolved photoelectron spectroscopy of Al3O3-: photoisomerization versus photofragmentation, Appl. Phys. A 100, 615 (2011)

2009

  • A. Grubisic, X. Li, S. T. Stokes, G. F. Ganteför, K. H. Bowen, B. Kiran, P. Jena, R. Burgert and H. Schnöckel, Al13H-: Hydrogen Atom Site-Selectivity and the Shell Model, J. Chem. Phys. 131, 121103 (2009)