Featured Research

from universities, journals, and other organizations

Researchers take magnetic waves for a spin

Date:
January 29, 2014
Source:
New York University
Summary:
Researchers have developed a method for creating and directing fast moving waves in magnetic fields that have the potential to enhance communication and information processing in computer chips and other consumer products.

NYU researchers have developed a method for creating and directing fast moving waves in magnetic fields that have the potential to enhance communication and information processing in computer chips and other consumer products. Physically, these spin waves are much like water waves, like those on the surface of an ocean. However, with a purpose akin to that of electromagnetic waves, spin waves can efficiently transfer energy and information from place to place.
Credit: © EpicStockMedia / Fotolia

Researchers at New York University have developed a method for creating and directing fast moving waves in magnetic fields that have the potential to enhance communication and information processing in computer chips and other consumer products.

Their method, reported in the most recent issue of the journal Nanotechnology, employs "spin waves," which are waves that move in magnetic materials. Physically, these spin waves are much like water waves -- like those that propagate on the surface of an ocean. However, with a purpose akin to that of electromagnetic waves (i.e., light and radio waves), spin waves can efficiently transfer energy and information from place to place.

"Spin waves hold tremendous promise in improving the functionality of a range of technologies," says Andrew Kent, a professor in NYU's Department of Physics and one of the paper's co-authors. "Our results mark another vital step in harnessing a resource that is faster and more energy efficient that what we rely on today."

Currently, electromagnetic waves in antennas can be converted into spin waves. However, the resulting spin waves have a long wavelength and propagate slowly. In contrast, short-wavelength spin waves can move over greater distances, more quickly, and with less energy, and thus present the possibility of improving a range of communications and electronic devices.

Yet, scientists have had difficulty in creating such spin waves. To overcome this obstacle, the NYU researchers developed "spin torque nano-oscillators" (STNO) -- nanoscale devices that can convert a direct current into spin waves. They showed that these oscillators can be arranged in arrays to direct the spin wave energy, much the way antennas are used to direct electromagnetic waves.

Crucially, they developed a method that allows the spin waves to navigate in specific patterns and directions throughout a magnetic material. Their idea relies on the interference of waves and controlling the interference to produce specific wave propagation patterns.

The study's other authors were Ferran Macià, a research scientist at the University of Barcelona and an NYU post-doctoral fellow at the time of the study, and Frank Hoppensteadt, a professor emeritus at NYU's Courant Institute of Mathematical Sciences.

The research was supported by a Marie Curie International Outgoing Fellowship (253214), a grant from the Army Research Office (W911NF-08-1-0317), and Neurocirc LLC.


Story Source:

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


Journal Reference:

  1. F Macià, F C Hoppensteadt, A D Kent. Spin wave excitation patterns generated by spin torque oscillators. Nanotechnology, 2014

Cite This Page:

New York University. "Researchers take magnetic waves for a spin." ScienceDaily. ScienceDaily, 29 January 2014. <www.sciencedaily.com/releases/2014/01/140129114614.htm>.
New York University. (2014, January 29). Researchers take magnetic waves for a spin. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2014/01/140129114614.htm
New York University. "Researchers take magnetic waves for a spin." ScienceDaily. www.sciencedaily.com/releases/2014/01/140129114614.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