Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Physics: New research group established

11.08.2010
A crucial role in technical progress is being assigned to correlated solids. How can the properties of these materials best be analyzed? This is the focus of a new research group involving Würzburg physicists.

In many chemical elements and their compounds electrons exercise a huge influence over one another. In such cases, physicists talk of electronically correlated solids. Even minor influences, such as temperature, pressure, or magnetic fields, can dramatically alter the properties of these materials. For example, very low temperatures can cause some solids to conduct electricity with no resistance.

Unusual properties of this nature are of interest to basic research and to new technological applications. Correlated materials could well have a big role to play in, say, the development of new sensors, switches, and components.

Correlated solids can be modeled by computer

The properties of correlated solids can be analyzed using computer calculations. A methodological breakthrough has been achieved by researchers in this field with “Dynamic Molecular Field Theory” (DMFT). Over the past ten years, its combination, in particular, with other methods for calculating the electronic properties of solids has produced a completely new process for modeling correlated materials realistically.

“This new approach, however, needs to be developed further so we can also understand and perhaps even predict the properties of complex electronic systems,” say Würzburg professors Fakher Assaad and Ralph Claessen. This goal is being pursued by the new research group of which the two Würzburg physicists are members.

DFG research group with an international network

This is the world’s first coordinated research project in this very topical field of theoretical solid state physics. 25 scientists at 16 research institutes in Germany, Austria, and Switzerland are involved. They are joined by partners, together with whom the group covers almost the entire international community of researchers working in this field.

The German Research Foundation (DFG) will be providing the group with EUR 2.4 million in funding over the next three years. Its spokesperson is Professor Dieter Vollhardt from the Institute of Physics at the University of Augsburg.

Contacts at the University of Würzburg

Prof. Dr. Fakher Assaad, T +49 (0)931 31-83652, assaad@physik.uni-wuerzburg.de

Prof. Dr. Ralph Claessen, T +49 (0)931 31-85732, claessen@physik.uni-wuerzburg.de

Robert Emmerich | idw
Further information:
http://www.uni-wuerzburg.de

Further reports about: Sensors Switches chemical elements magnetic field technical progress

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

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

Im Focus: New proton record: Researchers measure magnetic moment with greatest possible precision

High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons

The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

IceCube experiment finds Earth can block high-energy particles from nuclear reactions

24.11.2017 | Physics and Astronomy

A 'half-hearted' solution to one-sided heart failure

24.11.2017 | Health and Medicine

Heidelberg Researchers Study Unique Underwater Stalactites

24.11.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>