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Trinity College Dublin

A low-temperature scanning tunneling microscopy and density functional theory study of Fe nanocluste

Research Field: 
Physics
Resource Type: 
Compute
Resource Class: 
B
Lead PI: 
Professor Igor Shvets
Abstract: 
The growth of Fe nanoclusters on the Ge(001) surface has been studied using low-temperature scanning tunneling microscopy (STM), low-energy electron diffraction and x-ray magnetic circular dichroism (XMCD). STM results indicate that Fe nucleates on the Ge(001) surface forming well ordered nanoclusters of an uniform size. Annealing these nanoclusters at moderate temperatures leads to a formation of nanowire-like structures, due to cluster mobility at such temperature. These arrays of Fe nanoclusters show a magnetic response as measured by XMCD.DFT will clarify the inner structure of the Fe nanoclusters and the local charge density will be compared with the acquired STM images.
Start Date: 
02/2011
Duration: 
8.00months

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