Determining the topological nature of materials by their substances is more important than their appearance
Topology hidden inside materials in the matter group called cerium monopnictides has been determined for the first time in the world.
The topological electronic phase distinguished by the latent topology inside materials is the award-winning subject of the Nobel Prize in Physics 2016, research on which is now being actively conducted all over the world.
In the topological electronic phase, an electronic state peculiar to the topological electronic phase occurs at the surface of materials (appearance), reflecting topology hidden inside materials (substances). For this reason, topology of a substance has been judged only by its appearance.
A joint research group succeeded in observing the topological phase transition in which a material changes to the topological electronic phase by using soft X-rays, light suitable for determining the topology of materials by their substances rather than by their appearance.
Since this research achievement enables direct determination of the essential topology hidden inside materials without judging the surface of the materials, it is expected that employing this technique will lead to the discovery of more diverse topological electronic phases.
This result was achieved by the research group of Assistant Professor Kenta Kuroda and Associate Professor Takeshi Kondo of the Institute for Solid State Physics, the University of Tokyo (Director Masashi Takigawa), in collaboration with Team Leader Ryotaro Arita (RIKEN Center for Emergent Matter Science), Assistant Professor Masayuki Ochi (the Graduate School of Science, Osaka University), Senior Scientist Takayuki Muro (Japan Synchrotron Radiation Research Institute), Deputy Director-General Hideyuki Kitazawa (National Institute for Materials Science) and Principle Researcher Yoshinori Haga (Japan Atomic Energy Agency).
Osaka University was founded in 1931 as one of the seven imperial universities of Japan and now has expanded to one of Japan's leading comprehensive universities. The University has now embarked on open research revolution from a position as Japan's most innovative university and among the most innovative institutions in the world according to Reuters 2015 Top 100 Innovative Universities and the Nature Index Innovation 2017. The university's ability to innovate from the stage of fundamental research through the creation of useful technology with economic impact stems from its broad disciplinary spectrum.
Saori Obayashi | EurekAlert!
Proteins imaged in graphene liquid cell have higher radiation tolerance
10.12.2018 | INM - Leibniz-Institut für Neue Materialien gGmbH
High-temperature electronics? That's hot
07.12.2018 | Purdue University
What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.
Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...
Scientists at the University of Stuttgart and the Karlsruhe Institute of Technology (KIT) succeed in important further development on the way to quantum Computers.
Quantum computers one day should be able to solve certain computing problems much faster than a classical computer. One of the most promising approaches is...
New Project SNAPSTER: Novel luminescent materials by encapsulating phosphorescent metal clusters with organic liquid crystals
Nowadays energy conversion in lighting and optoelectronic devices requires the use of rare earth oxides.
Scientists have discovered the first synthetic material that becomes thicker - at the molecular level - as it is stretched.
Researchers led by Dr Devesh Mistry from the University of Leeds discovered a new non-porous material that has unique and inherent "auxetic" stretching...
Scientists from the Theory Department of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science (CFEL) in Hamburg have shown through theoretical calculations and computer simulations that the force between electrons and lattice distortions in an atomically thin two-dimensional superconductor can be controlled with virtual photons. This could aid the development of new superconductors for energy-saving devices and many other technical applications.
The vacuum is not empty. It may sound like magic to laypeople but it has occupied physicists since the birth of quantum mechanics.
10.12.2018 | Event News
06.12.2018 | Event News
03.12.2018 | Event News
10.12.2018 | Physics and Astronomy
10.12.2018 | Life Sciences
10.12.2018 | Information Technology