A disturbance in the local magnetic order of a solid body can propagate across a material just like a wave. This wave is named spin wave and its quanta are known as magnons.
Physicists from the University of Kaiserslautern propose the usage of magnons to carry and process information instead of electrons as it is done in electronics.
This technology opens access to a new generation of computers in which data are processed without motion of any real particles like electrons.
This leads to a decrease of the accompanying heat loss and, consequently, to lower energy consumption. Moreover, unique magnon properties allow for the utilization of alternative computing concepts resulting in a drastic increase of speed and performance of modern processors.
In a study recently published in the prestigious scientific journal Nature Communications, the Kaiserslautern scientists have realized the transistor – the main component of any modern computer – solely based on Magnons.
The transistor was proposed for the first time and a proof of concept device was demonstrated. The density of magnons in this three-terminal device could be decreased one thousand times while flowing from the transistor's Source to its Drain via the injection of magnons in the Gate.
The interaction between magnon flows was so efficient due to a strong natural nonlinearity of magnons which was enhanced using an artificial magnetic material – the magnonic crystal.
The demonstrated “magnon controls magnon” approach will be used in future for the realization of a single-chip magnetic processor in which Terabytes of data will be processed purely within the same magnonic system.
The research team consisted of Dr. Andrii Chumak, Dr. Alexander Serga and Prof. Dr. Burkard Hillebrands from the State Research Center Optics and Material Sciences (OPTIMAS) funded by the State of Rhineland-Palatinate. Further funding was obtained through the Deutsche Forschungsgemeinschaft (Grant no. SE 1771/1-2) and EU-FET (Grant InSpin 612759).
For details of the study see:
Andrii V. Chumak, Alexander A. Serga, Burkard Hillebrands: Magnon transistor for all-magnon data processing, Nature Communications 2014 doi 10.1038/ncomms5700 (http://www.nature.com/naturecommunications).
Contact: Prof. Dr. Burkard Hillebrands, Tel.: 0631/205-4228, E-Mail: email@example.com
Legend:The schematic of magnon transistor. The flow of magnons from the transistor’s Source to Drain (blue bubbles) is controlled by the magnons injected into the Gate (red bubbles). The decrease or even the full stop of the Source-to-Drain magnon flow was realized experimentally (Copyright: Chumak, Serga, Hillebrands).
Thomas Jung | Technische Universität Kaiserslautern
New record in materials research: 1 terapascals in a laboratory
22.07.2016 | Universität Bayreuth
Mapping electromagnetic waveforms
22.07.2016 | Max-Planck-Institut für Quantenoptik
Munich Physicists have developed a novel electron microscope that can visualize electromagnetic fields oscillating at frequencies of billions of cycles per second.
Temporally varying electromagnetic fields are the driving force behind the whole of electronics. Their polarities can change at mind-bogglingly fast rates, and...
Breakup of continents with two speed: Continents initially stretch very slowly along the future splitting zone, but then move apart very quickly before the onset of rupture. The final speed can be up to 20 times faster than in the first, slow extension phase.phases
Present-day continents were shaped hundreds of millions of years ago as the supercontinent Pangaea broke apart. Derived from Pangaea’s main fragments Gondwana...
Scaffolding and specialised workers help with the delivery – Heidelberg biochemists gain new insights into biogenesis
A type of scaffolding on which specialised workers ply their trade helps in the manufacturing process of the two subunits from which the ribosome – the protein...
Scientists at the Helmholtz Zentrum München have developed a new mass spectrometry imaging method which, for the first time, makes it possible to analyze hundreds of metabolites in fixed tissue samples. Their findings, published in the journal Nature Protocols, explain the new access to metabolic information, which will offer previously unexploited potential for tissue-based research and molecular diagnostics.
In biomedical research, working with tissue samples is indispensable because it permits insights into the biological reality of patients, for example, in...
Chemists at the University of Basel have succeeded in using computer simulations to elucidate transient structures in proteins. In the journal Angewandte Chemie, the researchers set out how computer simulations of details at the atomic level can be used to understand proteins’ modes of action.
Using computational chemistry, it is possible to characterize the motion of individual atoms of a molecule. Today, the latest simulation techniques allow...
15.07.2016 | Event News
15.07.2016 | Event News
11.07.2016 | Event News
22.07.2016 | Information Technology
22.07.2016 | Physics and Astronomy
22.07.2016 | Life Sciences