Navigation Links
Discovery by UC Riverside physicists could enable development of faster computers
Date:6/23/2008

electrons with zero net spin in the semiconductor.

But the surprising result for the researchers was that at an intermediate thickness, ranging from two to six atomic layers, the selectivity of the interface completely changes.

"We see a dramatic and complete reversal in the spin of electrons that pass through the interface," said Roland Kawakami, an assistant professor of physics who led the research team. "This time, spin up electrons pass through while spin down electrons are reflected back to the semiconductor. In other words, the thickness of the MgO interface determines whether spin up or spin down electrons are allowed to pass through it."

According to his research team, such a "spin reversal" can be used to control current flow.

Significance of the discovery:

"Electron spins are oriented at random in an ordinary electric circuit, and, therefore, do not affect current flow," explained Yan Li, the first author of the research paper, who made the discovery. "But if spin is polarized, that is, aligned in one direction, you can manipulate the flow of current and the transport of information a feature that would be of great interest to the semiconductor industry. What is amazing is that only a couple of atomic layers of MgO can completely reverse the spin selection of the interface. This is unexpected because MgO is not a magnetic material."

Li, a graduate student in the Department of Physics and Astronomy working toward her doctorate in physics, said the research team will work next on making electronic devices based on the spin reversal. "This will not only test its feasibility for applications, but also help determine the cause of the spin reversal, which is still unclear," she said.

Kawakami's lab is one of very few labs in the world that perform both the advanced mat
'/>"/>

Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6050
University of California - Riverside
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Cellectricon and AstraZeneca - Partners in New High Throughput Ion Channel Drug Discovery Technology
2. Oncomine(TM) Again Key to Prostate Cancer Discovery
3. Nuevolution Announces Drug Discovery Alliance With Lexicon Pharmaceuticals
4. Pharmacopeia Advances Strategic Plan to Focus Resources on Development and Later-Stage Discovery Programs
5. WuXi PharmaTech (NYSE: WX) Appoints Dr. Peng Wang as VP of Discovery Biology
6. Genetic Engineering and Biotechnology News (GEN) Reports on Mass Spec in Drug Discovery
7. Applied Isotope Technologies will Exclusively Supply Biochemimarker(TM) Discovery Products for a Unique Pilot Study on Autism
8. Innovative and Forward-Thinking Experts to Deliver Keynote Presentations at IBCs 13th Annual Drug Discovery & Development of Innovative Therapeutics World Congress
9. Sinovac to Present at the Brean Murray, Carret & Co. All-Cap All-China Conference and the Roth China Discovery Tour 2008
10. Syndexa Pharmaceuticals Corporation and ChemDiv, Inc. Announce Discovery Collaboration
11. New Fragment-based Drug Discovery Platform Announced Between IOTA Pharmaceuticals Ltd, Cambridge (UK), and Beactica AB, Uppsala (Sweden)
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Discovery by UC Riverside physicists could enable development of faster computers
(Date:8/28/2014)... 2014  Next month, executives from clinical trial marketing firm ... beginning with Patient-Centered Clinical Trials 2014 , to be ... , September 4-5. Patient recruitment experts Bonnie A. ... will share insights on the benefits of employing an ... – from media to mobile apps – can be used ...
(Date:8/28/2014)... by a Florida State University research team has led ... temperature, emit white light, and convert photon energy directly ... a butterfly. , Biwu Ma, associate professor in the ... College of Engineering, created the molecule in a lab ... that his creation has many other unique capabilities. , ...
(Date:8/28/2014)... Boston, MA (PRWEB) August 28, 2014 ... of wholesale construction materials, selected SoundConnect ... of their cloud based audio and web conferencing ... configured to support PrimeSource’s employees’ needs. SoundConnect ... technologies. , PrimeSource Building Products will be ...
(Date:8/27/2014)... Austin, TX (PRWEB) August 27, 2014 ... $6 million in Series B funding and secured Otter ... and investment capital will accelerate commercialization of GGI’s Agriplier™ ... multiple crop types. , “Since our first meeting, ... commitment to the biological product space,” said Alan Sobba, ...
Breaking Biology Technology:BBK Worldwide Leads Sessions at Key September Events 2Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices 2PrimeSource Chooses SoundConnect as Collaboration Provider 2Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 2Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 3
... Schneider Nationals vice president of application development, ... world's leading Information technology (IT) leaders by Computerworld, an ... demonstrate technology leadership in resolving pressing business problems. Honorees, ... issue of Computerworld and will be honored at ...
... network crash last week left many University of ... exactly was wrong with their e-mail. The Division ... UWs networks, experienced a system-wide crash last Friday that ... , ,According to Brian Rust, spokesperson for DoIT, ...
... days is an exercise in faith. Every day, more and more job ... , ,At the same time, lots of people we know are still ... jobs we've spotted, they say to us: "Yes, I saw that job ... ) you wrote to me about but I'm not pursuing it. It ...
Cached Biology Technology:Schneider Vice President Honored as Top IT Leader by Computerworld 2Router Failure and Software Crash UW-Madison Network 2Pity the Midwest Technology Sales Guy 2Pity the Midwest Technology Sales Guy 3Pity the Midwest Technology Sales Guy 4Pity the Midwest Technology Sales Guy 5
(Date:8/28/2014)... FASEB MARC (Maximizing Access to Research Careers) ... the American College of Sports Medicine,s Conference on ... in Miami, Florida. These awards are meant ... and scientists from underrepresented groups into the mainstream ... the participation of young scientists at the American ...
(Date:8/28/2014)... than 25 million kilometres of new roads will be ... slice into Earth,s last wildernesses, where they bring an ... , Now, an ambitious study has created a ,global ... try to balance the competing demands of development and ... ,environmental-values, layer that estimates that natural importance of ecosystems ...
(Date:8/28/2014)... and Alaska totaled 515 million board feet in volume ... more than 10 percent compared to the first quarter ... Station reported today. During this same period, West coast ... board feet. , The total value of these log ... million in the same quarter, while the total value ...
Breaking Biology News(10 mins):Study shows where on the planet new roads should and should not go 2Study shows where on the planet new roads should and should not go 3West coast log exports up, lumber exports down in second quarter of 2014 2
... #1 FOR IMMEDIATE RELEASE Wine in a box? Think ... Chemistry In a surprise discovery that ... gauche alternative to bottles, scientists in Canada are reporting that ... substances that contribute odors to wine and can lower its ...
... not only effect the environment via their exhaust pipes. ... with getting from a to b that we rarely ... Research Letters , Monday, June 8, 2009, researchers from ... University of California, Berkeley, have created a framework to ...
... , GREENVILLE, S.C., June 3 Integrated Biometrics, a leading ... Charles Johnson to its sales staff. Johnson is a ... and had previously worked at Integrated Biometrics in 2006. ... Chair of the local ASIS Chapter. , , "As ...
Cached Biology News:American Chemical Society's Weekly PressPac -- June 3, 2009 2American Chemical Society's Weekly PressPac -- June 3, 2009 3American Chemical Society's Weekly PressPac -- June 3, 2009 4American Chemical Society's Weekly PressPac -- June 3, 2009 5American Chemical Society's Weekly PressPac -- June 3, 2009 6American Chemical Society's Weekly PressPac -- June 3, 2009 7American Chemical Society's Weekly PressPac -- June 3, 2009 8American Chemical Society's Weekly PressPac -- June 3, 2009 9American Chemical Society's Weekly PressPac -- June 3, 2009 10More than just the tailpipe 2Integrated Biometrics Adds Security Industry Veteran to Sales Staff 2
... The Gene Pulser Xcell ... V, 50-60 Hz, is used ... This system includes the main ... (25-3,275 microfarad range) or square-wave ...
... software is used on Macintosh operating ... of any DNA sequence up to ... placement of primers and GC clamps ... gel electrophoresis (DGGE), constant denaturing gel ...
... RNAi Services offer you a full ... studies. B-Bridges advanced design parameters, effective ... ensure that you obtain quality results ... Design Service utilizes their proprietary B-Algo ...
... Solution Polymorphic DNA Technologies offers a ... complete solution for SNP discovery by performing ... primers, PCR amplification, DNA sequencing and data ... SNP discovery, Polymorphic uses the gold standard ...
Biology Products: