Navigation Links
UMD scientists make magnetic new graphene discovery
Date:4/15/2011

make the Kondo effect appear only at extremely low temperatures," he said.

The team measured the characteristic temperature for the Kondo effect in graphene with vacancies to be as high as 90 Kelvin, which is comparable to that seen in metals with very high electron densities. Moreover the Kondo temperature can be tuned by the voltage on an electrical gate, an effect not seen in metals. They theorize that the same unusual properties of that result in graphene's electrons acting as if they have no mass also make them interact very strongly with certain kinds of impurities, such as vacancies, leading to a strong Kondo effect at a relatively high temperature.

Fuhrer thinks that if vacancies in graphene could be arranged in just the right way, ferromagnetism could result. "Individual magnetic moments can be coupled together through the Kondo effect, forcing them all to line up in the same direction," he said.

"The result would be a ferromagnet, like iron, but instead made only of carbon. Magnetism in graphene could lead to new types of nanoscale sensors of magnetic fields. And, when coupled with graphene's tremendous electrical properties, magnetism in graphene could also have interesting applications in the area of spintronics, which uses the magnetic moment of the electron, instead of its electric charge, to represent the information in a computer.

"This opens the possibility of 'defect engineering' in graphene - plucking out atoms in the right places to design the magnetic properties you want," said Fuhrer.


'/>"/>

Contact: Lee Tune
ltune@umd.edu
301-405-4679
University of Maryland
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Clemson scientists put a (nano) spring in their step
2. City of Hope Helps KGI Launch New Management Training Program for Scientists
3. University of Pennsylvania scientists move optical computing closer to reality
4. Scientists grow nanonets able to snare added energy transfer
5. The National Cancer Institute Joins the Global Community of Scientists Now Using BIOMARKERcenter From Thomson Reuters
6. Scientists peel away the mystery behind golds catalytic prowess
7. SACHEM Launches 2-D HPLC e-Learning Program : New e-Learning Program Teaches Scientists How to Better Analyze and Prove Product Purity Through Greater Sensitivity and Precision in Identification of Trace Components
8. Vermillion and Stanford Scientists Receive Best Research Award From the PAD Coalition
9. Brewing better beer: Scientists determine the genomic origins of lager yeasts
10. Tengion Scientists Publish Positive Preclinical Findings With Neo-Organ Demonstrating Long-term Durability and Growth With Skeletal Maturation
11. CU scientists create worlds thinnest balloon -- just one atom thick
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
UMD scientists make magnetic new graphene discovery
(Date:7/24/2014)... 2014 Gain recognition for leadership ... of the biotech industry. Nominations are now being ... to you by the Bio Supply Management ... chain management professionals for the past 7 years. ... the Biotech industry – Manufacturers, Service Providers, Material ...
(Date:7/24/2014)... , July 24, 2014  Asterias Biotherapeutics, Inc. ... emerging field of regenerative medicine, announced today that ... presentation to investors on Tuesday, July 29, 2014, ... presentation will include an overview of Asterias, business ... webcast, visit http://www.ustream.tv/channel/asterias-biotherapeutics at least 15 ...
(Date:7/24/2014)... trained personnel, and detection dogs to safeguard airports ... revolutionary new electronic chip with nano-sized chemical sensors ... , The groundbreaking nanotechnology-inspired sensor, devised by Prof. ... of Chemistry and Center for Nanoscience and Nanotechnology, ... up the scent of explosives molecules better than ...
(Date:7/24/2014)... scientists are making progress in devising suitable means ... relies on quantum dotsa kind of artificial atom, ... new study demonstrates that changing the coupling of ... impulses can help better control them. This has ... quantum information units, which would produce faster quantum ...
Breaking Biology Technology:Call for Submission: BSMA’s Supply Chain Management Innovation Awards 2Call for Submission: BSMA’s Supply Chain Management Innovation Awards 3Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4Nano-sized chip 'sniffs out' explosives far better than trained dogs 2
... Remove >90% of mammalian RNA from , ... Simple procedure takes less than 2 hours , ... Seamless integration with , MICROB Express ... microarray expression analysis with , bacterial RNA isolated from host cells ...
... , , ... methods to isolate high quality RNA from a large number of ... the RNAqueous-96 , Kit . This kit, which ... of intact RNA in a 96-well plate format. An optional on-the-filter , ...
... Amplification Kits-- Now Available with Cy Dyes , ... Extremely sensitive , ArrayScript Reverse , ... yields , ... 4000-fold amplification of mRNA , Optimized buffers--high dye coupling efficiency , ...
Cached Biology Technology:Bacterial RNA Isolation From Infected Eukaryotic Hosts 2Bacterial RNA Isolation From Infected Eukaryotic Hosts 3Bacterial RNA Isolation From Infected Eukaryotic Hosts 4Bacterial RNA Isolation From Infected Eukaryotic Hosts 5Bacterial RNA Isolation From Infected Eukaryotic Hosts 6Automating RNA Isolation 2Automating RNA Isolation 3Automating RNA Isolation 4Automating RNA Isolation 5aRNA Synthesis and Labeling for Array Analysis 2aRNA Synthesis and Labeling for Array Analysis 3aRNA Synthesis and Labeling for Array Analysis 4aRNA Synthesis and Labeling for Array Analysis 5
(Date:7/24/2014)... Angeles, where electric cars ply silent freeways, solar panels ... beneath the earth, from howling winds and from the ... that it is technically and economically feasible to convert ... renewable energy. Published in Energy , the plan ... energy supply in California that could create tens of ...
(Date:7/24/2014)... 24, 2014 Some sticky research out of York ... a certain species of toxic grass fungus: moose saliva ... Biology Letters , "Ungulate saliva inhibits a grassendophyte ... to red fescue grass (which hosts a fungus called ... slower fungus growth and less toxicity. , "Plants have ...
(Date:7/24/2014)... of researchers has developed a new nanoscale agent for ... for assessing the function and properties of the GI ... and treatment of gut diseases. , Illnesses ... and inflammatory bowel disease all occur in the intestine ... with diseases such as diabetes and Parkinson,s. , ...
Breaking Biology News(10 mins):Stanford study shows how to power California with wind, water and sun 2Stanford study shows how to power California with wind, water and sun 3Stanford study shows how to power California with wind, water and sun 4Moose drool inhibits growth of toxic fungus: York U research 2New imaging agent provides better picture of the gut 2
... are benefiting from research that allows farmers to harvest rice ... to provide desperately needed food and ease hunger during monga ... that occurs in northwest Bangladesh from September to November after ... harvest of transplanted rice in December. According to ...
... and fish have evolved camouflage defences to deter attack from ... has discovered that trees in New Zealand have evolved a ... the first evidence of this strategy in plant life. ... and in response they have evolved a variety of defences ...
... CINCINNATI Scientists have linked an overactive response by one ... killer, or NK, cells to the onset of biliary ... cause severe liver damage and death. Researchers at Cincinnati ... that helps NK cells attack bile duct tissues lessens damage ...
Cached Biology News:Early rice harvests ease annual famine in Bangladesh 2New discovery suggests trees evolved camouflage defense against long extinct predator 2Scientists link immune system's natural killer cells to infant liver disease 2
Request Info...
See product name for description....
... Amino acid mixture excluding l-[U-14C]methionine, ... containing 2% ethanol, sterilized. > ... mCi/mg atom carbon. Mixture of ... Ile, Leu, Lys, Phe, Pro, Ser, ...
Request Info...
Biology Products: