Ein Laserpuls trifft auf Nickel (grün). Elektronen, deren Spin nach oben zeigt (rot) wechseln in das Silizium (gelb). Aus dem Silizium wechseln Elektronen beider Spinrichtungen zurück in die Nickel-Schicht.
Scientists from TU Wien (Vienna) are proposing a new method for creating extremely strong spin currents. They are essential for spintronics, a technology that could replace today's electronics. A laser pulse hits nickel (green). Spin-up-electrons (red) change into silicon (yellow). Electrons with both spin-orientations change back from silicon into nickel. In our computer chips, information is transported in form of electrical charge. Electrons or other charge carriers have to be moved from one place to another.
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