Dresden 2009 – wissenschaftliches Programm
DS 9.1: Vortrag
Dienstag, 24. März 2009, 09:30–09:45, GER 37
Electromigration and Heat Distribution in Silver Nanowires — •Christian Wirtz, Niemma M. Buckanie, Sven Stienen, Ralf Meckenstock, Frank-Joachim Meyer zu Heringdorf, and Günter Dumpich — Universität Duisburg Essen, Experimentalphysik and Centre for Nanointegration Duisburg-Essen , Lotharstr.1 , 47048 Duisburg
We investigate the electromigration behaviour and thermal properties of single-crystalline silver nanowires subjected to high electrical current densities.
The electromigration measurements are conducted within a Scanning Electron Microscope using an experimental setup which provides SEM imaging and four-wire electrical resistance monitoring simultaneously. Current densities in excess of 107 A/cm2 are applied, and the direction of electromigration mass flow is found opposite to that of the net electronic momentum.
For thermal measurements, Scanning Thermal Microscopy (SThM) is employed, revealing the heat distribution within an electrically stressed nanowire.
Further research efforts will comprise a combination of the aforementioned techniques with ferromagnetic resonance as well as resistance measurements on carbon nanotubes.