Atomically thin layers of the semimetal tungsten ditelluride conduct electricity losslessly along narrow, one-dimensional channels at the crystal edges. The material is therefore a second-order topological insulator. By obtaining ...
Nanophysics
May 26, 2020
0
27
Thomas Heine, professor of theoretical chemistry at TU Dresden, together with his team, first predicted a topological 2-D polymer in 2019. Only one year later, an international team led by Italian researchers was able to ...
Polymers
May 22, 2020
0
1685
In recent years, topology has emerged as an important tool to classify and characterize properties of materials. It has been found that many materials exhibit a number of unusual topological properties, which are unaffected ...
General Physics
May 20, 2020
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66
U.S. and German physicists have found surprising evidence that one of the most famous phenomena in modern physics—the quantum Hall effect—is "reincarnated" in topological superconductors that could be used to build fault-tolerant ...
Quantum Physics
May 18, 2020
0
440
A discovery that long eluded physicists has been detected in a laboratory at Princeton. A team of physicists detected superconducting currents—the flow of electrons without wasting energy—along the exterior edge of a ...
Superconductivity
Apr 30, 2020
0
2161
Researchers at the University of Copenhagen, in collaboration with Microsoft Quantum researchers, have used a pencil-shaped semiconductor measuring only a few hundred nanometers in diameter to uncover a new route to topological ...
Superconductivity
Apr 22, 2020
0
312
Topological materials attract great interest and may provide the basis for a new era in materials development. In Science Advances, physicists around Andreas Elben, Jinlong Yu, Peter Zoller and Benoit Vermersch now present ...
Quantum Physics
Apr 10, 2020
0
1120
Topological insulators (TIs) are bulk insulating materials that nonetheless exhibit metallic conductivity on their surfaces. This conductivity is guaranteed by the bulk band structure's topology—the surface features these ...
Quantum Physics
Mar 16, 2020
0
16
Dutch researchers at AMOLF and TU Delft have seen light propagate in a special material without reflections. The material, a photonic crystal, consists of two parts that each have a slightly different pattern of perforations. ...
Optics & Photonics
Mar 6, 2020
0
819
Materials that exhibit topological phases can be classified by their dimensionality, symmetries and topological invariants to form conductive-edge states with peculiar transport and spin properties. For example, the quantum ...
