Featured Research

from universities, journals, and other organizations

Device Controls Electron Spin At Room Temperature

Date:
April 7, 2009
Source:
North Carolina State University
Summary:
In a breakthrough for applied physics, researchers have developed a magnetic semiconductor memory device, using GaMnN thin films, which utilizes both the charge and spin of electrons at room temperature.

In a breakthrough for applied physics, 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.

The finding represents a major breakthrough, as previous devices that used magnetic semiconductors (GaMnAs) and controlled electron spin were only functional at 100 K (or -173 Celsius). By controlling the spin of electrons, the new device represents a significant advance in semiconductor efficiency and speed.

The new device is also an advance on earlier experimental models because it uses only 5-6 volts 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.

The research team included NC State professors S.M. Bedair and Nadia El-Masry; adjunct professor J.M. Zavada; post-doctoral research fellow N. Nepal; and graduate students Oliver Luen and P. Frajtag. The research was supported by the U.S. Army Research Office.


Story Source:

The above story is based on materials provided by North Carolina State University. Note: Materials may be edited for content and length.


Journal Reference:

  1. N. Nepal, M. Oliver Luen, J. M. Zavada, S. M. Bedair, P. Frajtag, and N. A. El-Masry. Electric field control of room temperature ferromagnetism in III-N dilute magnetic semiconductor films. Applied Physics Letters, 2009; 94 (13): 132505 DOI: 10.1063/1.3110963

Cite This Page:

North Carolina State University. "Device Controls Electron Spin At Room Temperature." ScienceDaily. ScienceDaily, 7 April 2009. <www.sciencedaily.com/releases/2009/04/090406102604.htm>.
North Carolina State University. (2009, April 7). Device Controls Electron Spin At Room Temperature. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2009/04/090406102604.htm
North Carolina State University. "Device Controls Electron Spin At Room Temperature." ScienceDaily. www.sciencedaily.com/releases/2009/04/090406102604.htm (accessed September 20, 2014).

Share This



More Matter & Energy News

Saturday, September 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

MIT BioSuit A New Take On Traditional Spacesuits

MIT BioSuit A New Take On Traditional Spacesuits

Newsy (Sep. 19, 2014) The MIT BioSuit could be an alternative to big, bulky traditional spacesuits, but the concept needs some work. Video provided by Newsy
Powered by NewsLook.com
Virtual Reality Headsets Unveiled at Tokyo Game Show

Virtual Reality Headsets Unveiled at Tokyo Game Show

AFP (Sep. 18, 2014) Several companies unveiled virtual reality headsets at the Tokyo Game Show, Asia's largest digital entertainment exhibition. Duration: 00:48 Video provided by AFP
Powered by NewsLook.com
Apple's iOS8 Includes New 'Killswitch' To Curb Theft

Apple's iOS8 Includes New 'Killswitch' To Curb Theft

Newsy (Sep. 18, 2014) Apple's new operating system, iOS 8, comes with Apple's killswitch feature already activated, unlike all the models before it. Video provided by Newsy
Powered by NewsLook.com
Stocks Hit All-Time High as Fed Holds Steady

Stocks Hit All-Time High as Fed Holds Steady

AP (Sep. 17, 2014) The Federal Reserve signaled Wednesday that it plans to keep a key interest rate at a record low because a broad range of U.S. economic measures remain subpar. Stocks hit an all-time high on the news. (Sept. 17) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins