Navigation Links
Saving data in vortex structures
Date:2/21/2012

This release is available in German.

Three years ago Professor Christian Pfleiderer and his team from the physics department at the TUM discovered an entirely new magnetic structure in a silicon manganese crystal a grid of magnetic eddies. Together with the team of Professor Achim Rosch from the University of Cologne, he studied the properties of these eddies, so-called skyrmions, named after the British physicist Tony Skyrme, who predicted their existence 50 years ago. They were expecting results in the field of so-called spintronics, nano-electric components that utilize not only the electric charge of electrons for processing information, but also their magnetic momentum, known as spin.

While Peter Grnberg and Albert Fert received the Nobel Prize in 2007 for work on significantly faster data readout, research today concentrates on the question of how magnetic information can be written directly to materials via electric current. However, the extremely strong electric currents required produce side effects, which are practically untamable, even in nano-structures. Since skyrmions can be moved with 100,000 times less current, interest has been aroused in both the scientific community and in industry.

Although magnetic eddies were discovered in silicon manganese it was clear that it would not remain the only material capable of generating skyrmions. This has turned out to be true. Meanwhile, Japanese researchers have proven that individual eddies can be generated, and a group of physicists from the Research Center Jlich, as well as the Universities of Hamburg and Kiel, provided evidence that magnetic eddies can be generated on surfaces. They managed to build a data bit out of only 15 atoms. By way of comparison, a magnetic bit on a common hard drive requires about one million atoms.

Yet, writing, updating and reading out information remained a problem. So far, Professor Pfleiderer's team has resorted to neutron radiation from the neighboring research reactor FRM II at the TU Muenchen to study the materials. "We can just take the crystals generated in our laboratory at the physics department, walk over there and use the neutrons to measure the magnetic structure, its dynamics and many other properties," said Christian Pfleiderer.

Using neutron radiation, the scientists were able to prove that even the tiniest of currents are sufficient to move the magnetic eddies. Now the physicists have developed a method by which skyrmions can be moved and measured in a purely electronic manner. "When the electric eddies move in a material, they generate an electric field", said Christian Pfleiderer. "And that is something we can measure directly with electronic equipment available in our laboratory."

At present a current is used in the read/write head of a hard drive to generate a magnetic field in order to magnetize a spot on the hard drive and thus write a data bit. Skyrmions, in contrast, can be moved directly and that with very small currents. "This should make saving and processing data much more compact and energy-efficient," said Christian Pfleiderer.

However, the measurement of this phenomenon still depends on very low temperatures. The European Research Council is currently funding a project with the aim of developing new materials that will permit the use of skyrmions at room temperature. But there is a lot of research work yet to be done before the first electronic components based on this technology reach the market.


'/>"/>

Contact: Dr. Andreas Battenberg
battenberg@zv.tum.de
49-892-891-0510
Technische Universitaet Muenchen
Source:Eurekalert  

Related biology technology :

1. Coventry Launches Market Leading Online Savings Account With Added Poppy Appeal
2. Scientists prepare for confined field trials of life-saving drought-tolerant transgenic maize
3. Rapid heating prepares energy-saving zeolite for greater role in industrial separations
4. Asia Debut for Money-Saving Pharma-Packaging Machines from Ireland
5. Mexico Premiere for Money-Saving Pharma Leak Testing Equipment
6. New Website Offers Fuel Saving Products Such as Hydrogen Injection Systems and Hydrogen Generators
7. GPhA Statement on the Introduction of the Bipartisan Biogenerics Consensus Bill: Promoting Innovation and Access to Life-Saving Medicine Act
8. Lumenis(R) Introduces Cost-Saving Innovations at the 2009 American Academy of Dermatology (AAD) Annual Meeting
9. Techstreet Launches BuildingBlocks Utility for Industry Standards Saving Time and Increasing Productivity for Engineers
10. ProSource 2.0 Offers Value, Savings for Lab Supplies
11. Carilion Clinic Invests in Sight Saving Technology to Improve Patient Care: Carilion Clinic Teams Up with Retasure
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Saving data in vortex structures
(Date:1/24/2017)... 2017 /PRNewswire/ - BioAmber Inc. (NYSE: BIOA ) ... to increase the size of the offering by 75% and ... with warrants to purchase 1,842,106 shares of common stock of ... of common stock (the "Exercise Price"), at a price to ... "Public Price"). The warrants have a term of four (4) ...
(Date:1/24/2017)... MA, USA & Geneva, Switerland (PRWEB) , ... ... ... pleased to announce the first commercially available malaria Plasmodium falciparum culture panels with ... P. falciparum culture panels, which are available in a range of concentrations from ...
(Date:1/24/2017)... Washington, DC (PRWEB) , ... January 23, 2017 ... ... nutrition and food security, is the first-ever recipient of the National Academy of ... contribution to global food security and nutrition. , The annual National Academy of ...
(Date:1/24/2017)... --  Instrument Business Outlook ( IBO ) ... ) the 2016 Company of the Year. ... developments in the analytical and life science instrumentation ... outstanding technical, operational and financial results throughout the ... "In 2016, Bio-Techne capitalized on opportunities in life ...
Breaking Biology Technology:
(Date:12/16/2016)... Dec. 16, 2016   IdentyTechSolutions America LLC ... products and solutions and a cutting-edge manufacturer of ... it is offering seamless, integrated solutions that comprise ... products. The solutions provide IdentyTech,s customers with combined ... facilities from crime and theft. "We ...
(Date:12/15/2016)... , Dec 15, 2016 ... Research and Markets has announced the addition ... offering. The report forecasts the global military biometrics market ... The report has been prepared based on an in-depth market ... and its growth prospects over the coming years. The report also includes ...
(Date:12/8/2016)... Market Research Future published a half cooked research report ... Security and Service Market is expected to grow over the CAGR ... Highlights: ... Mobile Biometric Security and Service Market is ... of authentication and security from unwanted cyber threats. The increasing use ...
Breaking Biology News(10 mins):