Featured Research

from universities, journals, and other organizations

Ohio University Researchers Create Improved Magnetic-semiconductor Sandwich

Date:
October 4, 2006
Source:
Ohio University
Summary:
Researchers at Ohio University have created an improved magnetic semiconductor that solves a problem spintronics scientists have been investigating for years.

Researchers at Ohio University have created an improved magnetic semiconductor that solves a problem spintronics scientists have been investigating for years.

Related Articles


Unlike classic or vintage electronics that operate on electronic charges, spin-based electronics focuses on the spin of electrons to carry and store information. Researchers predict spintronics will revolutionize the electronics industry by making devices faster, improving storage capacity and reducing the amount of power needed to run them.

Spintronics technology has not been widely applied yet, however, because scientists have had difficulty controlling, manipulating and measuring the electrons.

In a paper published online today in Physical Review Letters, a team of Ohio University and Ohio State University scientists led by postdoctoral fellow Erdong Lu have created an effective interface between a semiconductor and ferromagnetic metal. The two-layer “sandwich” of gallium nitride (GaN) and manganese gallium (MnGa) nearly eliminates any intermixing of the two layers and allows the spin to be “tuned.”

“We found a way to grow the metal on the semiconductor. The crystalline match between the two materials was nearly perfect. The advantage of this finding is in the growth process. By adjusting the conditions of the growth, we can tune the spin,” said Arthur Smith, associate professor of physics and astronomy and director of Ohio University’s Nanoscale & Quantum Phenomena Institute.

Magnetization was controlled by monitoring a property of the growth called reconstruction. Through the monitoring process, researchers could predict the properties of the spin.

“It has to do with the ratio of manganese and gallium,” Smith said.

The researchers also found that this new magnetic-semiconductor bilayer will operate at room temperature. Other materials have only worked at very low temperatures, which makes them impractical for commercial applications.

The research was funded by the National Science Foundation.

The primary author on the paper is Erdong Lu; co-authors are Smith and David Ingram, also of Ohio University, and J.W. Knepper and F.Y. Yang of Ohio State University.


Story Source:

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


Cite This Page:

Ohio University. "Ohio University Researchers Create Improved Magnetic-semiconductor Sandwich." ScienceDaily. ScienceDaily, 4 October 2006. <www.sciencedaily.com/releases/2006/10/061002214638.htm>.
Ohio University. (2006, October 4). Ohio University Researchers Create Improved Magnetic-semiconductor Sandwich. ScienceDaily. Retrieved November 25, 2014 from www.sciencedaily.com/releases/2006/10/061002214638.htm
Ohio University. "Ohio University Researchers Create Improved Magnetic-semiconductor Sandwich." ScienceDaily. www.sciencedaily.com/releases/2006/10/061002214638.htm (accessed November 25, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Tuesday, November 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Who Will Failed Nuclear Talks Hurt Most?

Who Will Failed Nuclear Talks Hurt Most?

Reuters - Business Video Online (Nov. 25, 2014) With no immediate prospect of sanctions relief for Iran, and no solid progress in negotiations with the West over the country's nuclear programme, Ciara Lee asks why talks have still not produced results and what a resolution would mean for both parties. Video provided by Reuters
Powered by NewsLook.com
Flying Enthusiast Converts Real-Life Aircraft Cockpit Into Simulator

Flying Enthusiast Converts Real-Life Aircraft Cockpit Into Simulator

Reuters - Innovations Video Online (Nov. 25, 2014) A virtual flying enthusiast converts parts of a written-off Airbus aircraft into a working flight simulator in his northern Slovenian home. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Car Park Solution for Flexible Green Energy

Car Park Solution for Flexible Green Energy

Reuters - Innovations Video Online (Nov. 24, 2014) A British solar power start-up says that by covering millions of existing car park spaces around the UK with flexible solar panels, the country's power problems could be solved. Suzannah Butcher reports. Video provided by Reuters
Powered by NewsLook.com
Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Newsy (Nov. 23, 2014) Microsoft has robotic security guards working at its Silicon Valley Campus. Video provided by Newsy
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:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

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