News Column

Data on General Science Discussed by Researchers at Forschungszentrum Julich (The magnetoelectrochemical switch)

August 29, 2014

By a News Reporter-Staff News Editor at Science Letter -- A new study on Science is now available. According to news reporting from Julich, Germany, by NewsRx journalists, research stated, "In the field of spintronics, the archetype solid-state two-terminal device is the spin valve, where the resistance is controlled by the magnetization configuration. We show here how this concept of spin-dependent switch can be extended to magnetic electrodes in solution, by magnetic control of their chemical environment."

The news correspondents obtained a quote from the research from Forschungszentrum Julich, "Appropriate nanoscale design allows a huge enhancement of the magnetic force field experienced by paramagnetic molecular species in solutions, which changes between repulsive and attractive on changing the electrodes' magnetic orientations. Specifically, the field gradient force created within a sub-100-nm-sized nanogap separating two magnetic electrodes can be reversed by changing the orientation of the electrodes' magnetization relative to the current flowing between the electrodes. This can result in a breaking or making of an electric nanocontact, with a change of resistance by a factor of up to 10(3)."

According to the news reporters, the research concluded: "The results reveal how an external field can impact chemical equilibrium in the vicinity of nanoscale magnetic circuits."

For more information on this research see: The magnetoelectrochemical switch. Proceedings of the National Academy of Sciences of the United States of America, 2014;111(29):10433-10437. Proceedings of the National Academy of Sciences of the United States of America can be contacted at: Natl Acad Sciences, 2101 Constitution Ave NW, Washington, DC 20418, USA. (National Academy of Sciences -; Proceedings of the National Academy of Sciences of the United States of America -

Our news journalists report that additional information may be obtained by contacting P.L. Popa, Forschungszentrum Julich, Peter Grunberg Inst, D-52428 Julich, Germany. Additional authors for this research include N.T. Kemp, H. Majjad, G. Dalmas, V. Faramarzi, C. Andreas, R. Hertel and B. Doudin (see also Science).

Keywords for this news article include: Julich, Europe, Germany, Science

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Source: Science Letter

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