Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

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

Sopping up proteins with thermosponges: Researchers develop novel nanoparticle platform that proves effective in delivering protein-based drugs October 22nd, 2014

Brookhaven Lab Launches Computational Science Initiative:Leveraging computational science expertise and investments across the Laboratory to tackle "big data" challenges October 22nd, 2014

Bipolar Disorder Discovery at the Nano Level: Tiny structures found in brain synapses help scientists better understand disorder October 22nd, 2014

NIST offers electronics industry 2 ways to snoop on self-organizing molecules October 22nd, 2014

Possible Futures

Imaging electric charge propagating along microbial nanowires October 20th, 2014

Superconducting circuits, simplified: New circuit design could unlock the power of experimental superconducting computer chips October 18th, 2014

Nanocoatings Market By Product Is Expected To Reach USD 8.17 Billion By 2020: Grand View Research, Inc. October 15th, 2014

Perpetuus Carbon Group Receives Independent Verification of its Production Capacity for Graphenes at 140 Tonnes per Annum: Perpetuus Becomes the First Manufacturer in the Sector to Allow Third Party Audit October 7th, 2014

Spintronics

Graphene and Amaranthus Superparamagnets: Breakthrough nanoparticles discovery of Indian researcher September 23rd, 2014

IEEE International Electron Devices Meeting To Celebrate 60th Anniversary as The Leading Technical Conference for Advanced Semiconductor Devices September 18th, 2014

A new, tunable device for spintronics: An international team of scientists including physicist Jairo Sinova from the University of Mainz realises a tunable spin-charge converter made of GaAs August 29th, 2014

Molecular engineers record an electron's quantum behavior August 14th, 2014

Memory Technology

Superconducting circuits, simplified: New circuit design could unlock the power of experimental superconducting computer chips October 18th, 2014

Future computers could be built from magnetic 'tornadoes' October 14th, 2014

Research mimics brain cells to boost memory power September 30th, 2014

SouthWest NanoTechnologies (SWeNT) Receives NIST Small Business Innovation Research (SBIR) Phase 1 Award to Produce Greater than 99% Semiconducting Single-Wall Carbon Nanotubes September 19th, 2014

Announcements

NanoTechnology for Defense (NT4D) October 22nd, 2014

Mechanism behind nature's sparkles revealed October 22nd, 2014

TARA Biosystems and Harris & Harris Group Form Company to Improve Safety and Efficacy of New Therapies October 22nd, 2014

Researchers patent a nanofluid that improves heat conductivity October 22nd, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE