The scientists lead by Dr. Carsten Hucho found a way to move smallest possible magnetic entities – so-called flux quanta – with the help of acoustic waves. Their results may open new ways to process data. The study is published in the Journal Solid State Communications (Vol. 142, p. 212).
Currently, electrons are used to transport information and process data but scientists are looking for alternatives. One possibility is the use of the magnetic properties of electrons, the so-called spin. Another avenue is the magnetic flux. „You cannot pin down single electrons“, says Carsten Hucho, „and their spin-orientation is not permanent.” Both problems can be avoided by using flux quanta in superconductors. These tiny magnetic fields, also called vortices, remain stable for a long time – theoretically infinite. ”We can keep track of an individual flux quantum – and now we can move the flux around”, says Hucho.
The scientists at PDI managed to transport magnetic flux quanta with a surface acoustic wave. The vortices move with the soundwave like on a conveyor-belt. So will these new findings accelerate the development of so-called “fluxtronics” after electronics and spintronics? Hucho cautions that “there is still a long way to go.” The main goal of the study was to show that magnetic flux quanta in superconductors can be manipulated in a well-defined way.
This possibility of manipulating the vortex motion and vortex density by a dynamic external parameter has far-reaching technological consequences besides the storage and processing of data. For instance, tiny magnetic particles could be transported in some sort of conveyor belt. “This would be of interest for molecular analytics in a so-called lab on a chip”, says Hucho.
Josef Zens | alfa
Taking a spin on plasma space tornadoes with NASA observations
20.11.2017 | NASA/Goddard Space Flight Center
NASA detects solar flare pulses at Sun and Earth
17.11.2017 | NASA/Goddard Space Flight Center
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
20.11.2017 | Life Sciences
20.11.2017 | Trade Fair News
20.11.2017 | Earth Sciences