Alternating currents for alternative computing with magnets
© Sabri Koraltan/Universität Wien
A new study conducted at the University of Vienna, the Max Planck Institute for Intelligent Systems in Stuttgart, and the Helmholtz Centers in Berlin and Dresden takes an important step in the challenge to miniaturize computing devices and to make them more energy-efficient. The work published in the renowned scientific journal Science Advances opens up new possibilities for creating reprogrammable magnonic circuits by exciting spin waves by alternating currents and redirecting these waves on demand.
- BESSY II: Heterostructures for SpintronicsSpintronic devices work with spin textures caused by quantum-physical interactions. A Spanish-German collaboration has now studied graphene-cobalt-iridium heterostructures at BESSY II. The results show how two desired quantum-physical effects reinforce each other in these heterostructures. This could lead to new spintronic devices based on these materials.
- Green hydrogen: MXenes shows talent as catalyst for oxygen evolutionThe MXene class of materials has many talents. An international team led by HZB chemist Michelle Browne has now demonstrated that MXenes, properly functionalised, are excellent catalysts for the oxygen evolution reaction in electrolytic water splitting. They are more stable and efficient than the best metal oxide catalysts currently available. The team is now extensively characterising these MXene catalysts for water splitting at the Berlin X-ray source BESSY II and Soleil Synchrotron in France.
- SpinMagIC: 'EPR on a chip' ensures quality of olive oil and beerThe first sign of spoilage in many food products is the formation of free radicals, which reduces the shelf-life and the overall quality of the food. Until now, the detection of these molecules has been very costly for the food companies. Researchers at HZB and the University of Stuttgart have developed a portable, small and inexpensive 'EPR on a chip' sensor that can detect free radicals even at very low concentrations. They are now working to set up a spin-off company, supported by the EXIST research transfer programme of the German Federal Ministry of Economics and Climate Protection. The EPRoC sensor will initially be used in the production of olive oil and beer to ensure the quality of these products.