Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

University of Minnesota leads team in discovery of novel type of magnetic wave

11.11.2010
Findings could improve wiring in national electrical grid systems

A team of international researchers led by physicists in the University of Minnesota's College of Science and Engineering have made a significant breakthrough in an effort to understand the phenomenon of high-temperature superconductivity in complex copper-oxides—one of the most studied scientific topics in history.

The University of Minnesota researchers and their international colleagues from Germany, France and China report the discovery of a novel type of magnetic wave involving oxygen atoms. The new findings could have implications for improving superconducting electric wires used in national electrical grids.

The study by lead author Martin Greven, an associate professor in the university's School of Physics and Astronomy, is published in the Nov. 11 issue of Nature together with a "News and Views" introduction. The research is also scheduled to be highlighted in the journal Science.

"Following the Nobel-Prize winning discovery of high-temperature superconductivity in complex copper-oxide materials in the mid 1980s, the effort to understand this phenomenon has been one of the major scientific challenges in the field of physics for the past quarter century, with more than 100,000 publications on the topic," Greven said.

"While the commercialization of these complex copper-oxide materials, in the form of superior electric wires, has recently begun, physicists have not yet been able to solve the mystery of why these exotic materials are superconducting in the first place. The materials' unusual magnetism is often argued to be responsible for their superconductivity," Greven added.

In their experiments, the researchers bombarded the copper-oxide crystals with intense beams of neutrons. The neutrons themselves are magnetic, and by carefully measuring how these particles are scattered from the crystals, the research team was able to show the existence of unusual magnetic waves involving oxygen atoms.

"We believe that our discovery sheds new light on this hotly debated subject of superconductivity," Greven said.

Other members of the research team include two of Greven's former Ph.D. students, Guichuan Yu, University of Minnesota, School of Physics and Astronomy, and Yuan Li, now at the Max Planck Institute, Stuttgart, Germany; V. Balédent , Y. Sidis and P. Bourges, Laboratoire Léon Brillouin, Gif sur Yvette, France; N. Bariši, Physikalisches Institut, Universitat Stuttgart, Stuttgart, Germany; K. Hradil, Institut fur Physikalisches Chemie, Universitat Göttingen, Göttingen, Germany; R.A. Mole, Forschungsneutronenquelle Heinz Maier-Leibnitz, Garching, Germany; P. Steffens, Institut Laue Langevin, France; and X. Zhao State Key Lab of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, China.

More information on the research can be found on the Nature website at: http://www.nature.com/nature/journal/v468/n7321/full/nature09477.html

Rhonda Zurn | EurekAlert!
Further information:
http://www.umn.edu
http://www.nature.com/nature/journal/v468/n7321/full/nature09477.html

More articles from Physics and Astronomy:

nachricht Astronomers find unexpected, dust-obscured star formation in distant galaxy
24.03.2017 | University of Massachusetts at Amherst

nachricht Gravitational wave kicks monster black hole out of galactic core
24.03.2017 | NASA/Goddard Space Flight Center

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: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Argon is not the 'dope' for metallic hydrogen

24.03.2017 | Materials Sciences

Astronomers find unexpected, dust-obscured star formation in distant galaxy

24.03.2017 | Physics and Astronomy

Gravitational wave kicks monster black hole out of galactic core

24.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>