Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Electronic spin memory device operates at room temperature

Abstract:
North Carolina State University researchers have developed a magnetic semiconductor memory device, using GaMnN thin films, which utilizes both the charge and spin of electrons at room temperature. This is a major breakthrough, as previous devices that used magnetic semiconductors (GaMnAs) and controlled electron spin were only functional at 100 K (-173°C). By controlling the spin of electrons, the new device represents a significant advance in semiconductor efficiency.

Electronic spin memory device operates at room temperature

Raliegh, NC | Posted on April 6th, 2009

The new device is also an advance on earlier experimental models because it uses only 5-6 V to switch the bias of the electrons. Previous cold-temperature devices used much higher voltage. The research was published April 2 in Applied Physics Letters.

Dr. Nadia El-Masry, an MSE professor, and Dr. S.M. Bedair, a professor of electrical and computer engineering, led an NC State research team that has achieved this key milestone in developing a new type of semiconductor. Its developers say it offers the promise of substantial gains in semiconductor efficiency and functionality.

This emerging technology enables a semiconductor to make use of electron spin (that is, the up and down motion of the subatomic electron) as well as the positive or negative charge characteristics that support the functionality of today's microelectronic devices. Experiments conducted by other researchers have yielded functional prototypes of spin-electronic devices, which are also known as magnetic semiconductors. But the earlier prototypes all had a significant drawback: they could function only at extremely cold temperatures—around minus 267°F.

El-Masry says the team has produced a magnetic memory device that operates at and above room temperature, opening the door to practical applications for this technology. Other potential uses for spin-electronic devices cited by El-Masry include lasers and light emitting diodes (LEDs) whose emission wavelengths are controlled by applying a magnetic field.

Dr. N. Nepal, a National Research Council fellow, is also on the research team. A grant from the Army Research Office is funding the research.

####

About North Carolina State University
With more than 31,000 students and nearly 8,000 faculty and staff, North Carolina State University is a comprehensive university known for its leadership in education and research, and globally recognized for its science, technology, engineering and mathematics leadership.

NC State students, faculty and staff are focused. As one of the leading land-grant institutions in the nation, NC State is committed to playing an active and vital role in improving the quality of life for the citizens of North Carolina, the nation and the world.

For more information, please click here

Contacts:
Joyner Visitor Center
Campus Box 7504
North Carolina State University
Raleigh, NC 27695-7504
(919) 515-3470
(919) 515-2556 fax

Copyright © R&D Daily

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Smaller, faster, cheaper: A new type of modulator for the future of data transmission July 27th, 2015

Researchers predict material with record-setting melting point July 27th, 2015

Reshaping the solar spectrum to turn light to electricity: UC Riverside researchers find a way to use the infrared region of the sun's spectrum to make solar cells more efficient July 27th, 2015

Industrial Nanotech, Inc. Provides Update on PCAOB Audited Financials July 27th, 2015

Possible Futures

Smaller, faster, cheaper: A new type of modulator for the future of data transmission July 27th, 2015

Researchers predict material with record-setting melting point July 27th, 2015

Global Corrosion Resistant Nano Coatings Market To 2015: Acute Market Reports July 27th, 2015

Global Zinc oxide nanopowders Industry 2015: Acute Market Reports July 25th, 2015

Spintronics

Spintronics: Molecules stabilizing magnetism: Organic molecules fixing the magnetic orientation of a cobalt surface/ building block for a compact and low-cost storage technology/ publication in Nature Materials July 25th, 2015

Penn researchers discover new chiral property of silicon, with photonic applications July 25th, 2015

Spintronics just got faster July 20th, 2015

Fundamental observation of spin-controlled electrical conduction in metals: Ultrafast terahertz spectroscopy yields direct insight into the building block of modern magnetic memories July 6th, 2015

Memory Technology

Reshaping the solar spectrum to turn light to electricity: UC Riverside researchers find a way to use the infrared region of the sun's spectrum to make solar cells more efficient July 27th, 2015

Spintronics: Molecules stabilizing magnetism: Organic molecules fixing the magnetic orientation of a cobalt surface/ building block for a compact and low-cost storage technology/ publication in Nature Materials July 25th, 2015

Better memory with faster lasers July 14th, 2015

The quantum middle man July 2nd, 2015

Announcements

Researchers predict material with record-setting melting point July 27th, 2015

Reshaping the solar spectrum to turn light to electricity: UC Riverside researchers find a way to use the infrared region of the sun's spectrum to make solar cells more efficient July 27th, 2015

Industrial Nanotech, Inc. Provides Update on PCAOB Audited Financials July 27th, 2015

Global Corrosion Resistant Nano Coatings Market To 2015: Acute Market Reports July 27th, 2015

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project