Navigation Links
NIST researchers put a new spin on atomic musical chairs
Date:12/4/2009

Researchers from the National Institute of Standards and Technology (NIST) and the Naval Research Laboratory have developed a new way to introduce magnetic impurities in a semiconductor crystal by prodding it with a scanning tunneling microscope (STM). Detailed in a recent paper,* this technique will enable researchers to selectively implant atoms in a crystal one at a time to learn about its electrical and magnetic properties on the atomic scale.

A better understanding of these properties is fundamental to the development of "spintronics," electronic devices that will use electron spin, a characteristic of magnetism, instead of charge for storing information. Spintronics could increase the performance of electronic devices while reducing power usage and production costs.

Electronics manufacturers commonly introduce impurities into semiconducting crystals to change how well the material will conduct electricity. Researchers also can introduce impurities that induce a semiconductor to become magnetic. In these dilute magnetic semiconductors (DMS), the added impurity atoms typically must displace one of the original atoms in the crystal structure to become "active." One of the goals of DMS materials research is to achieve higher operating temperatures by making sure all the doped magnetic impurity atoms are activated. Knowing how the impurity atoms get into the host crystal lattice sites is essential to this process.

The experiments involved depositing single manganese atoms onto an indium arsenide surface. To become active and magnetize the DMS, the manganese atom must take a chair from one of the indium atoms by occupying an indium lattice site. Using the STM probe tip, the NIST researchers zapped an indium atom with sufficient voltage to dislodge it from its place in the lattice and switch places with the manganese atom. In this way the researchers can choose where and which manganese atom they want to make active.

Because
'/>"/>

Contact: Mark Esser
mark.esser@nist.gov
301-975-8735
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Elsevier is Re-Launching "Embase" to be a Powerful Resource Providing Deep Insights and Answers to Biomedical Researchers
2. Knome Launches First Platform-Agnostic Human Genome Sequencing and Analysis Service for Researchers
3. UT Knoxville and ORNL researchers turn algae into high-temperature hydrogen source
4. Berkeley researchers take the lead out of piezoelectrics
5. 80% of Researchers Surveyed Believe Their Laboratories Are Not Run Efficiently
6. Pitt-led researchers create nanoparticle coating to prevent freezing rain buildup
7. Berkeley researchers find new route to nano self-assembly
8. Small ... smaller ... smallest? ASU researchers create molecular diode
9. Researchers Present a Novel, Automated, Efficient Environmental Disinfection Technology that Significantly Reduces C. difficile, VRE and MRSA Contamination
10. Researchers create smaller and more efficient nuclear battery
11. Researchers Use Oragene●DNA to Find Genetic Link to Neglected Tropical Disease
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
NIST researchers put a new spin on atomic musical chairs
(Date:10/27/2014)... 2014 The report “Smart Highway ... Management, Communication, Monitoring), and by Display (Variable Message ... segments the global market into various sub-segments with ... identifies the drivers and restraints for this market ... Browse 75 market tables and 37 figures spread ...
(Date:10/27/2014)... Pa. , Oct. 27, 2014 ... Foundation of America (CCFA) announced today the launch ... , an educational campaign designed to ... diseases (IBD) on the paired role of nutrition ... To view the multimedia assets associated with this ...
(Date:10/26/2014)... The report "Data Center Networking Market ... WAN Optimization Appliances]: Global Advancements, Worldwide Forecasts & ... networking market into various segments with an in-depth ... identifies the factors driving this market, various restraints ... the future roadmaps. , Browse 106 market data ...
(Date:10/25/2014)... 2014 The report “Adipic Acid ... Geography - Global Trends & Forecast to 2019” ... to market drivers, opportunities, and trends in different ... 27 figures spread through 217 slides and in-depth ... & Forecast to 2019”., http://www.marketsandmarkets.com/Market-Reports/adipic-acid-269.html , Early ...
Breaking Biology Technology:Smart Highway Market by Technology, and Display Expected to Reach $27.992.0 Million by 2019- New Report by MarketsandMarkets 2Smart Highway Market by Technology, and Display Expected to Reach $27.992.0 Million by 2019- New Report by MarketsandMarkets 3Smart Highway Market by Technology, and Display Expected to Reach $27.992.0 Million by 2019- New Report by MarketsandMarkets 4Celebrity Cook Sunny Anderson Teams Up With Janssen And Crohn's & Colitis Foundation Of America To Launch Educational Campaign 2Celebrity Cook Sunny Anderson Teams Up With Janssen And Crohn's & Colitis Foundation Of America To Launch Educational Campaign 3Celebrity Cook Sunny Anderson Teams Up With Janssen And Crohn's & Colitis Foundation Of America To Launch Educational Campaign 4Data Center Networking Market by Ethernet Switches, SAN & Routers Worth $21.85 Billion by 2018 - New Report by MarketsandMarkets 2Data Center Networking Market by Ethernet Switches, SAN & Routers Worth $21.85 Billion by 2018 - New Report by MarketsandMarkets 3Data Center Networking Market by Ethernet Switches, SAN & Routers Worth $21.85 Billion by 2018 - New Report by MarketsandMarkets 4Adipic Acid Market Estimated to Grow $7,539.2 Million by 2019 - Report by MarketsandMarkets 2Adipic Acid Market Estimated to Grow $7,539.2 Million by 2019 - Report by MarketsandMarkets 3Adipic Acid Market Estimated to Grow $7,539.2 Million by 2019 - Report by MarketsandMarkets 4
... provided people with many items such as iPods, ... audio capabilities. Technology is evolving so quickly that ... years ago are now taken for granted. , ... understand how technology may evolve when entering into ...
... series of articles on raising capital from investors. This installment focuses ... time when raising equity capital, the offering terms are summarized in ... When dealing with angel investors , it is typical for ... angel investors will want to negotiate the initial term sheet, especially ...
... . - Oren Harari is coming to Milwaukee next ... of innovation. , ,Not just to manufacturers, who he will be ... to business organizations in a number of sectors, including technology. , ... to Compete in a Copycat Economy , he intends to deploy ...
Cached Biology Technology:Making deals with evolving technologies in mind 2Making deals with evolving technologies in mind 3Making deals with evolving technologies in mind 4Making deals with evolving technologies in mind 5Capital-raising term sheets for angels and venture capitalists 2Capital-raising term sheets for angels and venture capitalists 3Capital-raising term sheets for angels and venture capitalists 4Capital-raising term sheets for angels and venture capitalists 5Visions: Innovating like Madonna and Willie Nelson (and Steve Jobs) 2Visions: Innovating like Madonna and Willie Nelson (and Steve Jobs) 3
(Date:10/29/2014)... kind of stem cell, those referred to as ,facultative, ... is apparently nothing that differentiates these cells from the ... they retain the capacity to become stem cells again. ... an organ that hosts cells that stimulate tissue growth, ... case of a transplant. Knowledge of the underlying ...
(Date:10/29/2014)... Cancer Genomics of the Kidney consortium ( CAGEKID ... and exposure to aristolochic acid, an ingredient in ... Nature Communications , have important implications for public ... people every year, and in Central Europe incidence ... the International Cancer Genome Consortium (ICGC), has been ...
(Date:10/28/2014)... announced awards to expand the Office of Rare ... Advancing Translational Sciences (ORDR-NCATS) collaborative Rare Diseases Clinical ... scientists at 22 consortia will work with 98 ... investigate new treatments for patients with rare diseases. ... in fiscal 2014 funding from NIH. , Rett ...
Breaking Biology News(10 mins):A mechanism that allows a differentiated cell to reactivate as a stem cell revealed 2Kidney cancer in Central Europe 2NIH's ORDR-NCATS RDCRN & NICHD awards U54 cooperative agreement for natural history study 2NIH's ORDR-NCATS RDCRN & NICHD awards U54 cooperative agreement for natural history study 3
... days over what they eat, and whether horse meat ... been dominating headlines globally - calling for new ... successful food identification and authentication. As companies and manufacturers ... the gullible public, it is estimated that up to ...
... 2013 Sanford-Burnham Medical Research Institute (Sanford-Burnham) and ... build a pipeline of therapeutic drugs aimed at ... needs. Under this agreement, Mayo Clinic scientists will ... for Chemical Genomics (Prebys Center) to conduct early-stage ...
... increasingly resembles lusher latitudes to the south, according to ... land surface and newly improved satellite data sets. ... the relationship between changes in surface temperature and vegetation ... Ocean. Results show temperature and vegetation growth at northern ...
Cached Biology News:DNA barcoding alone sufficient to detect fraudulent deer products 2DNA barcoding alone sufficient to detect fraudulent deer products 3Sanford-Burnham Medical Research Institute and Mayo Clinic extend collaborative agreement 2Amplified greenhouse effect shifts north's growing seasons 2Amplified greenhouse effect shifts north's growing seasons 3
Human HVEM/TNFRSF14 Allophycocyanin MAb (Clone 94801)...
LAL Chromogenic Endpoint assay...
RayBio Human Atherosclerosis Antibody Array 1.1 (4) with Accessory, detects 40 inflammatory factors (for lysate) Class: Antibody Array Products Product Group: Antibody Array...
Request Info...
Biology Products: