Navigation Links
Spin pumping effect proven for the first time
Date:9/12/2011

o influence on each other - at least no static influence. However, once one of the two ferromagnetic layers is stimulated to a very fast precession in the gigahertz range, the damping of the precession depends of the orientation of the second magnetic layer. If both layers have the same orientation, then the damping is lower. If both are oriented in opposite directions, then the damping is higher.

Dynamic interaction

Up to now, it had not been possible to research the effect described as "spin-pumping" experimentally. The scientists have now been able to demonstrate the effect in the ALICE test chamber built by RUB physicists in Berlin. The precession of the magnetic moments in a ferromagnetic layer is "pumped" through the non-magnetic intermediate copper layer and absorbed by the second ferromagnetic layer. In other words, ferromagnetic layers, which do not interact with each other statically because the intermediate layer is too thick, are still able to "affect" each other dynamically through pumping and diffusion of spins from one layer to another.

A typical "spin valve" in data storage

The sequence of layers selected in the experiment is that of a typical spin valve. These are nano-magnetic layer structures which are used as magnetic sensors in the read heads of hard disks and which encode the logical bits "0" and "1" in non-volatile magnetic data storage. The speed at which data can be read and written, depends crucially on the precession of the magnetic moments and their damping. "Therefore, the finding that the damping of the magnetic precession is influenced by spin pumping through non-magnetic intermediate layers is not only of fundamental but also of practical interest for industrial applications" said Professor Zabel.


'/>"/>

Contact: Professor Dr. Hartmut Zabel
hartmut.zabel@rub.de
49-234-322-3649
Ruhr-University Bochum
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Laboratory Pumping Systems to Reach $3.1 Billion by 2012, According to New Report by Global Industry Analysts, Inc.
2. China Biopharma Effects 1 for 100 Reverse Stock Split
3. Insmed and Premacure Cite Study Results Demonstrating Potential Effectiveness of IPLEX(TM) in Preventing Blindness in Premature Infants
4. Strong elasticity size effects in ZnO nanowires
5. New Data From Head-to-Head Phase 3 Trial Demonstrate That Liraglutide is More Effective Than Exenatide in Treatment of Type 2 Diabetes
6. Persistent Vaccination Effect of GRAZAX(R) After Completion of Treatment
7. DermTech and Rady Childrens Hospital-San Diego, Initiate Study to Understand Effects of Vitamin D as a Treatment for Atopic Dermatitis in Children and Young Adults
8. DURECTs Collaboration With Alpharma Clears HSR Review and Is Effective
9. VAP(R) Cholesterol Test Helps Researchers Identify Treatment Effects of Combination Therapy
10. Antheras Varespladib Demonstrates Significant Anti-Inflammatory Effect and LDL Reduction in Patients With Coronary Heart Disease
11. BioInformatics, LLC Studies Effective Strategies for Scientific Publishing in a Web 2.0 World
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/25/2014)... 24, 2014 ... has announced the addition of the  "The ... Other 2-D Nanomaterials "  report to their ... ,CNTs and graphene are the strongest, lightest ... with a performance-per-weight greater than any other ...
(Date:10/22/2014)... The Americas Inorganic Refrigerants Market report defines ... with analysis and forecast of revenue. , Browse ... Market report, to get an idea of the ... of the segmentation in the Americas inorganic refrigerants ... figures. , http://www.micromarketmonitor.com/market/americas-inorganic-refrigerants-4191654241.html , Inorganic ...
(Date:10/22/2014)... October 22, 2014 WriteResult, LLC ... – has been working with a team of researchers ... Haven Farms Community Farming Collaborative to provide electronic questionnaire ... The study, which started in May, aims to ... provides participants weekly exposure to and participation in urban ...
(Date:10/22/2014)... According to new market research report "Cloud ... Deployment & Support), by Service Model (SaaS, PaaS, ... (Hybrid & Community)) - Global Forecast to 2019", ... Professional Services Market into various sub-segments with an ... identifies the drivers and restraints for this market ...
Breaking Biology Technology:The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 2The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 3The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 4The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 2The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 3myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5
... 10, 2011 Boston Scientific Corporation (NYSE: ... a clinical education program and online resource center for ... spinal cord stimulation (SCS) technology, procedures and techniques.  The ... the International Spine Intervention Society (ISIS) occurring this week ...
... Verenium Corporation (Nasdaq: VRNM ), a leading industrial ... enzymes, today reported a summary of recent Company highlights and ... June 30, 2011. "I am very pleased with ... partnership negotiations in the first half of the year," said ...
... NEW YORK, Aug. 9, 2011 Reportlinker.com ... is available in its catalogue: ...     http://www.reportlinker.com/p0591346/ ... Biochips, DNA Chips, Genosensors, Microarrays and Labs-on-the-Chip ...
Cached Biology Technology:Boston Scientific Launches Neuromodulation Learning Institute To Enhance Clinical Education For Spinal Cord Stimulation 2Boston Scientific Launches Neuromodulation Learning Institute To Enhance Clinical Education For Spinal Cord Stimulation 3Boston Scientific Launches Neuromodulation Learning Institute To Enhance Clinical Education For Spinal Cord Stimulation 4Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 2Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 3Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 4Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 5Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 6Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 7Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 8Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 9Biochips: Genosensors, Microarrays, Labs-On-The-Chip 2
(Date:10/15/2014)... the pandemic risk from strains of influenza virus increases ... ourselves to become complacent that the most substantial threats ... , Influenza pandemics arise when a new virus strain ... immunity – spreads in the human population. There have ... the worst of which – the 1918 Spanish Flu ...
(Date:10/15/2014)... University Mainz (JGU) as a full member, ensuring ... a significant nationwide standing in the field of ... Gutenberg University Mainz as a full member of ... and international competition for the best minds and ... proud that Mainz University has been recognized as ...
(Date:10/15/2014)... increased resistance to bacterial pneumonia in female mice to ... , Females are naturally more resistant to respiratory infections ... shown that increased resistance to bacterial pneumonia in female ... 3 (NOS3). They also show that this enzyme is ... hormone estrogen. , The team, lead by Professor Lester ...
Breaking Biology News(10 mins):Scientists 'must not become complacent' when assessing pandemic threat from flu viruses 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3
... when a mouse repeatedly experiences defeat by a dominant ... memory molecule in a brain circuit for social learning, ... National Institute of Mental Health (NIMH) have discovered. ... welcome strangers in spite of repeated social defeat. Their ...
... cure rate for the once almost universally fatal childhood ... in the near future, thanks to improvements in diagnosis ... investigators at St. Jude Children's Research Hospital. Almost 4,000 ... each year, about two-thirds of which are in children ...
... in repairing damaged DNA causes mice to develop the ... have discovered. , Scientists at OHSU, the University of ... that generating mice that lack the gene encoding the ... obesity and reach nearly twice the weight of their ...
Cached Biology News:Mice lacking social memory molecule take bullying in stride 2Mice lacking social memory molecule take bullying in stride 3St. Jude projects 90 percent cure rate for ALL 2St. Jude projects 90 percent cure rate for ALL 3St. Jude projects 90 percent cure rate for ALL 4St. Jude projects 90 percent cure rate for ALL 5Removing DNA repair gene causes metabolic syndrome 2Removing DNA repair gene causes metabolic syndrome 3
... The FDSS6000 System is an ... assays, assay development and high throughput ... and luminescence modalities., The Hamamatsu light ... highlight our companys decades-long experience in ...
...
... supplies, for 10 chips, provides the ... high-sensitivity RNA analysis (picogram levels) with ... electrophoresis system. Supplied are 1,250 microliters ... stain, 20 microliters RNA ladder, 900 ...
... 3-(3,5-Dibromo-4-hydroxy-benzoyl)-2-ethyl-benzofuran-6-sulfonicacid-(4-(thiazol-2-ylsulfamyl)-phenyl)-amide White solid. ... GAS. A cell-permeable sulfanamido-benzbromarone compound that ... non-competitive allosteric inhibitor of PTP1B (IC ... 8 μM for PTP1B 403 ...
Biology Products: