Communications of the ACM
New Devices Based on Rust Could Reduce Excess Heat in Computers
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Researchers at Johannes Gutenberg University Mainz (JGU), in cooperation with colleagues at Utrecht University and the Center for Quantum Spintronics (QuSpin) at the Norwegian University of Science and Technology, have demonstrated that antiferromagnetic iron oxide, the main component of rust, is an inexpensive and promising material to transport information with low excess heating at increased speeds.
The researchers used platinum wires over the insulating iron oxide to enable an electric current to pass close by. This electric current leads to a transfer of energy from the platinum into the iron oxide, thereby creating magnons; the iron oxide was able to carry information over the large distances needed for computing devices.
"This result demonstrates the suitability of antiferromagnets to replace currently used components. Devices based on fast antiferromagnet insulators are now conceivable," says JGU researcher Romain Lebrun.
From Johannes Gutenberg University of Mainz
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