Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Video captures bubble-blowing battery in action: Researchers propose how bubbles form, could lead to smaller lithium-air batteries April 26th, 2017

New Product Nanoparticle preparation from Intertronics with new Thinky NP-100 Nano Pulveriser April 26th, 2017

California Research Alliance by BASF establishes more than 25 research projects in three years April 26th, 2017

Affordable STM32 Cloud-Connectable Kit from STMicroelectronics Puts More Features On-Board for Fast and Flexible IoT-Device Development April 26th, 2017

Possible Futures

Video captures bubble-blowing battery in action: Researchers propose how bubbles form, could lead to smaller lithium-air batteries April 26th, 2017

California Research Alliance by BASF establishes more than 25 research projects in three years April 26th, 2017

Geoffrey Beach: Drawn to explore magnetism: Materials researcher is working on the magnetic memory of the future April 25th, 2017

Nanoparticle vaccine shows potential as immunotherapy to fight multiple cancer types April 24th, 2017

Spintronics

Smart multi-layered magnetic material acts as an electric switch: New study reveals characteristic of islands of magnetic metals between vacuum gaps, displaying tunnelling electric current March 1st, 2017

First experimental proof of a 70 year old physics theory: First observation of magnetic phase transition in 2-D materials, as predicted by the Nobel winner Onsager in 1943 January 6th, 2017

Investigations of the skyrmion Hall effect reveal surprising results: One step further towards the application of skyrmions in spintronic devices December 28th, 2016

Electron highway inside crystal December 12th, 2016

Memory Technology

Geoffrey Beach: Drawn to explore magnetism: Materials researcher is working on the magnetic memory of the future April 25th, 2017

New ultrafast flexible and transparent memory devices could herald new era of electronics April 1st, 2017

Information storage with a nanoscale twist: Discovery of a novel rotational force inside magnetic vortices makes it easier to design ultrahigh capacity disk drives March 28th, 2017

Smart multi-layered magnetic material acts as an electric switch: New study reveals characteristic of islands of magnetic metals between vacuum gaps, displaying tunnelling electric current March 1st, 2017

Announcements

Video captures bubble-blowing battery in action: Researchers propose how bubbles form, could lead to smaller lithium-air batteries April 26th, 2017

New Product Nanoparticle preparation from Intertronics with new Thinky NP-100 Nano Pulveriser April 26th, 2017

California Research Alliance by BASF establishes more than 25 research projects in three years April 26th, 2017

Affordable STM32 Cloud-Connectable Kit from STMicroelectronics Puts More Features On-Board for Fast and Flexible IoT-Device Development April 26th, 2017

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