Featured Research

from universities, journals, and other organizations

Important step in next generation of computing: Vital insight into spintronics

Date:
July 4, 2011
Source:
University of Cambridge
Summary:
Scientists have taken one step closer to the next generation of computers. New research provides insight into spintronics, which has been hailed as the successor to the transistor.

Scientists have taken one step closer to the next generation of computers. Research from the Cavendish Laboratory, the University of Cambridge's Department of Physics, provides new insight into spintronics, which has been hailed as the successor to the transistor.

Related Articles


Spintronics, which exploits the electron's tiny magnetic moment, or 'spin', could radically change computing due to its potential of high-speed, high-density and low-power consumption. The new research sheds light on how to make 'spin' more efficient.

For the past fifty years, progress in electronics has relied heavily on the downsizing of the transistor through the semiconductor industry in order to provide the technology for the small, powerful computers that are the basis of our modern information society. In a 1965 paper, Intel co-founder Gordon E. Moore described how the number of transistors that could be placed inexpensively on an integrated circuit had doubled every year between 1958 and 1965, predicting that the trend would continue for at least ten more years.

That prediction, now known as Moore's Law, effectively described a trend that has continued ever since, but the end of that trend -- the moment when transistors are as small as atoms, and cannot be shrunk any further -- is expected as early as 2015. At the moment, researchers are seeking new concepts of electronics that sustain the growth of computing power.

Spintronics research attempts to develop a spin-based electronic technology that will replace the charge-based technology of semiconductors. Scientists have already begun to develop new spin-based electronics, beginning with the discovery in 1988 of giant magnetoresistance (GMR) effect. The discovery of GMR effect brought about a breakthrough in gigabyte hard disk drives and was also key in the development of portable electronic devices such as the iPod.

While conventional technology relies on harnessing the charge of electrons, the field of spintronics depends instead on the manipulation of electrons' spin. One of the unique properties in spintronics is that spins can be transferred without the flow of electric charge currents. This is called "spin current" and unlike other concepts of harnessing electrons, the spin current can transfer information without generating heat in electric devices. The major remaining obstacle to a viable spin current technology is the difficulty of creating a volume of spin current large enough to support current and future electronic devices.

However, the new Cambridge researchers in close collaboration with Professor Sergej Demokritov group at the University of Muenster, Germany, have, in part, addressed this issue. In order to create enhanced spin currents, the researchers used the collective motion of spins called spin waves (the wave property of spins). By bringing spin waves into interaction, they have demonstrated a new, more efficient way of generating spin current.

Dr Hidekazu Kurebayashi, from the Microelectronics Group at the Cavendish Laboratory, said: "You can find lots of different waves in nature, and one of the fascinating things is that waves often interact with each other. Likewise, there are a number of different interactions in spin waves. Our idea was to use such spin wave interactions for generating efficient spin currents."

According to their findings, one of the spin wave interactions (called three-magnon splitting) generates spin current ten times more efficiently than using pre-interacting spin-waves. Additionally, the findings link the two major research fields in spintronics, namely the spin current and the spin wave interaction.


Story Source:

The above story is based on materials provided by University of Cambridge. The original story is licensed under a Creative Commons license. Note: Materials may be edited for content and length.


Journal Reference:

  1. Hidekazu Kurebayashi, Oleksandr Dzyapko, Vladislav E. Demidov, Dong Fang, A. J. Ferguson, Sergej O. Demokritov. Controlled enhancement of spin-current emission by three-magnon splitting. Nature Materials, 2011; DOI: 10.1038/nmat3053

Cite This Page:

University of Cambridge. "Important step in next generation of computing: Vital insight into spintronics." ScienceDaily. ScienceDaily, 4 July 2011. <www.sciencedaily.com/releases/2011/07/110703133846.htm>.
University of Cambridge. (2011, July 4). Important step in next generation of computing: Vital insight into spintronics. ScienceDaily. Retrieved February 26, 2015 from www.sciencedaily.com/releases/2011/07/110703133846.htm
University of Cambridge. "Important step in next generation of computing: Vital insight into spintronics." ScienceDaily. www.sciencedaily.com/releases/2011/07/110703133846.htm (accessed February 26, 2015).

Share This


More From ScienceDaily



More Computers & Math News

Thursday, February 26, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Lenovo Hack May Be Retaliation For 'Superfish' Vulnerability

Lenovo Hack May Be Retaliation For 'Superfish' Vulnerability

Newsy (Feb. 26, 2015) Lenovo&apos;s website was hacked by what appears to be the infamous Lizard Squad group. The attack seems to be related to Lenovo&apos;s "Superfish" controversy. Video provided by Newsy
Powered by NewsLook.com
Cyber Criminals Holding Phone and Computer Data to Ransom

Cyber Criminals Holding Phone and Computer Data to Ransom

AFP (Feb. 26, 2015) Computer and smartphone viruses are holding an increasing number of devices hostage using “ransomware.” Duration:02:21 Video provided by AFP
Powered by NewsLook.com
China Shuns Big Tech Names

China Shuns Big Tech Names

Reuters - Business Video Online (Feb. 26, 2015) The Chinese government has taken products from major tech firms off its purchase list in favour of smaller domestic players, but experts warn the plan may backfire making them open to security risks. Eve Johnson reports. Video provided by Reuters
Powered by NewsLook.com
Apple Reveals Potential Date For Apple Watch Reveal

Apple Reveals Potential Date For Apple Watch Reveal

Newsy (Feb. 26, 2015) The company sent out announcements for a March 9 media event with a simple message, "Spring forward." 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