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>
firstname.lastname@example.org | TechnologieAllianz e.V.
Low-vibration sample holder for cryo fluorescence microscopic applications
27.03.2015 | TechnologieAllianz e.V.
Variable number of threads in braiding machines
16.03.2015 | TechnologieAllianz e.V.
In an experiment at the Department of Energy's SLAC National Accelerator Laboratory, scientists precisely measured the temperature and structure of aluminum as...
The IPH presents a solution at HANNOVER MESSE 2015 to make ship traffic more reliable while decreasing the maintenance costs at the same time. In cooperation with project partners, the research institute from Hannover, Germany, has developed a sensor system which continuously monitors the condition of the marine gearbox, thus preventing breakdowns. Special feature: the monitoring system works wirelessly and energy-autonomously. The required electrical power is generated where it is needed – directly at the sensor.
As well as cars need to be certified regularly (in Germany by the TÜV – Technical Inspection Association), ships need to be inspected – if the powertrain stops...
When an earthquake hits, the faster first responders can get to an impacted area, the more likely infrastructure--and lives--can be saved.
The Atlantic overturning is one of Earth’s most important heat transport systems, pumping warm water northwards and cold water southwards. Also known as the Gulf Stream system, it is responsible for the mild climate in northwestern Europe.
Scientists now found evidence for a slowdown of the overturning – multiple lines of observation suggest that in recent decades, the current system has been...
Because they are regularly subjected to heavy vehicle traffic, emissions, moisture and salt, above- and underground parking garages, as well as bridges, frequently experience large areas of corrosion. Most inspection systems to date have only been capable of inspecting smaller surface areas.
From April 13 to April 17 at the Hannover Messe (hall 2, exhibit booth C16), engineers from the Fraunhofer Institute for Nondestructive Testing IZFP will be...
25.03.2015 | Event News
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30.03.2015 | Press release
30.03.2015 | Life Sciences
30.03.2015 | Earth Sciences