Abstract
AbstractWe report the synthesis of GeTe, Sb2Te3 and Ge2Sb2Te5 nanowires via a gold-catalyzed vapor-liquid-solid mechanism. The nanowires are studied via electron microscopy and energy-dispersive X-ray spectrometry and are found to be single crystalline. For electrical measurements contact to individual nanowires is made via electron-beam lithography. The nanowires can be switched from their initially low resistance state to a higher resistance state by applying a 200ns voltage pulse. Switching back to the low resistance state is possible via annealing. Electric force microscopy studies show the switching takes place at the metal-nanowire contact.
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