Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Injection of Spin-polarized Electrons into Semiconductors for Spintronic Applications

12.12.2012
<p><strong>Background</strong><br>

The spin of charge carriers can serve as an information medium with faster components having much shorter switching times. Spin electronics or spintronics represents information by the orientation of the electron spin. To build a spin transistor it is necessary to inject spin-polarized electrons into classical semiconductors. Conventional methods for creating spin-polarized electrons involve polarization of spin created by ferromagnetic materials. </p> <p><strong>Technology</strong><br> This technology enables the injection of spin-polarized electrons into semiconductors at room temperature. This permits the production of spin-polarized materials that offer a highly efficient transition of the spin-polarized electrons. For ferromagnetic semiconductors such as Europium (II) sulfide (EuS) a high spin polarization exists at temperatures above room temperature if the ferromagnetic semiconductor interacts with additional free charge carriers. This spin-polarized ferromagnetic semiconductor is able to inject spin-polarization into a traditional (non-magnetic) semiconductor like GaAs or Si. The spin-polarized material consists therefore of multiple semiconducting and ferromagnetic semiconducting layers. Since the spin-polarized material works at room temperature extreme cooling is not required.</p>

<p><strong>Benefits</strong><br> <ul> <li>Highly spin-polarized material</li> <li>Enables spin-polarization in GaAs and Si without cooling</li> <li>Room temperature operation </li> </ul> <p><strong>IP Rights</strong><br> European patent EP1388898 B1 validated in Germany<br> US patent US6,949,778B2 </p> <p><strong>Origin</strong><br> Freie Universität Berlin, Germany</p>

Further Information: PDF

ipal GmbH
Phone: +49 (0)30/2125-4820

Contact
Dr. Dirk Dantz

info@technologieallianz.de | TechnologieAllianz e.V.
Further information:
http://www.technologieallianz.de/angebote.php?sort=sag&id=2766&lang=en
http://www.technologieallianz.de

More articles from Technology Offerings:

nachricht Innovative coating for implants for improved ingrowth into the bone
27.04.2015 | TechnologieAllianz e.V.

nachricht Context-sensitive indexing of hemodynamic parameters
12.03.2015 | TechnologieAllianz e.V.

All articles from Technology Offerings >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Fast and Accurate 3-D Imaging Technique to Track Optically-Trapped Particles

KAIST researchers published an article on the development of a novel technique to precisely track the 3-D positions of optically-trapped particles having complicated geometry in high speed in the April 2015 issue of Optica.

Daejeon, Republic of Korea, April 23, 2015--Optical tweezers have been used as an invaluable tool for exerting micro-scale force on microscopic particles and...

Im Focus: NOAA, Tulane identify second possible specimen of 'pocket shark' ever found

Pocket sharks are among the world's rarest finds

A very small and rare species of shark is swimming its way through scientific literature. But don't worry, the chances of this inches-long vertebrate biting...

Im Focus: Drexel materials scientists putting a new spin on computing memory

Ever since computers have been small enough to be fixtures on desks and laps, their central processing has functioned something like an atomic Etch A Sketch, with electromagnetic fields pushing data bits into place to encode data.

Unfortunately, the same drawbacks and perils of the mechanical sketch board have been just as pervasive in computing: making a change often requires starting...

Im Focus: Exploding stars help to understand thunderclouds on Earth

How is lightning initiated in thunderclouds? This is difficult to answer - how do you measure electric fields inside large, dangerously charged clouds? It was discovered, more or less by coincidence, that cosmic rays provide suitable probes to measure electric fields within thunderclouds. This surprising finding is published in Physical Review Letters on April 24th. The measurements were performed with the LOFAR radio telescope located in the Netherlands.

How is lightning initiated in thunderclouds? This is difficult to answer - how do you measure electric fields inside large, dangerously charged clouds? It was...

Im Focus: On the trail of a trace gas

Max Planck researcher Buhalqem Mamtimin determines how much nitrogen oxide is released into the atmosphere from agriculturally used oases.

In order to make statements about current and future air pollution, scientists use models which simulate the Earth’s atmosphere. A lot of information such as...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

HHL Energy Conference on May 11/12, 2015: Students Discuss about Decentralized Energy

23.04.2015 | Event News

“Developing our cities, preserving our planet”: Nobel Laureates gather for the first time in Asia

23.04.2015 | Event News

HHL's Entrepreneurship Conference on FinTech

13.04.2015 | Event News

 
Latest News

‘Dead zones’ found in Atlantic open waters

28.04.2015 | Earth Sciences

Endangered corals smothered by sponges on overfished Caribbean reefs

28.04.2015 | Ecology, The Environment and Conservation

Tidal tugs on Teflon faults drive slow-slipping earthquakes

28.04.2015 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>