Regensburg 2002 – wissenschaftliches Programm

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MA: Magnetismus

MA 16: Spinelektronik

MA 16.1: Vortrag

Donnerstag, 14. März 2002, 17:30–17:45, H10

Nonvolatile field programmable spin-logic gates based on sub-micrometer tunnelling elements — •Ralf Richter1,2, Ludwig Bär1, Günter Reiss2, and Joachim Wecker11Siemens AG, Corporate Technology MM1, 91052 Erlangen, Germany — 2University of Bielefeld, Faculty of Physics, 33501 Bielefeld, Germany

We present field programmable spin logic gates formed by spin dependent tunnelling (SDT) elements. Feasibility with sub-micron sized tunnelling elements is shown. We further introduce a principle for the clocked operation. In this scheme, the switching behaviour of the soft magnetic layer of the SDT elements forming the spin logic gate needs to be characterised by a so called Stoner-Wohlfarth astroid. Down to a width of 600 nm we discuss the switching behaviour of SDT elements with various shapes and different aspect ratios. From the measurements we conclude that even not single domain particles shows astroid-like switching behaviour. Finally, we show a field programmable spin logic device in clocked operation.

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DPG-Physik > DPG-Verhandlungen > 2002 > Regensburg