Volume 116, Number 2, October 2016
|Number of page(s)||4|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||22 November 2016|
Nanoscale photoconductive switching effect applied to atom probe tomography
Groupe de Physique des Matériaux, UMR 6634 CNRS, University and INSA of Rouen, Normandy University 76000 Rouen, France
Received: 6 July 2016
Accepted: 7 November 2016
By combining a laser pulse and a high-voltage (HV) pulse on the same sample, field evaporation of materials with poor electrical conductivity using ultra-short HV pulses is reported. Using a pump-probe setup, the shape of HV pulses experienced by surface atoms of the sample apex is experimentally observed. These results are in good agreement with classical models considering the temperature and free carriers produced by a laser pulse giving rise to local photoconduction.
PACS: 79.70.+q – Field emission, ionization, evaporation, and desorption / 72.40.+w – Photoconduction and photovoltaic effects
© EPLA, 2016
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