Category: Science

International collaboration demonstrates reliability of quantum simulations for materials design

An international collaboration with colleagues from over 30 universities and institutes to investigated to what extent quantum simulations of material properties agree when they are performed by different researchers and with different software. Thanks to an online collaboration, they successfully demonstrated that the most recent generations of codes agree well, in contrast to earlier generations. …

Continue reading

Google’s neural network beats humans at the ancient game of Go

A neural net system built by Google has beaten the European champion in the Chinese game of Go, winning five out of five games and crossing a new threshold for machine intelligence. In a recent paper published in Nature,  DeepMind researchers revealed how the system was constructed and how it was able to succeed where …

Continue reading

New hints on the metallization of Hydrogen

Recently scientist from the Edinburgh’s Centre for Science at Extreme Conditions  have come close to creating a long-sought new state for hydrogen. The group used a set-up called a diamond anvil cell to compress its sample of molecular hydrogen. This apparatus is essentially two gems that have been placed in opposition to each other. Their …

Continue reading

Yet another superconductor above 100 K ?

Following the recent discovery of very high temperature conventional superconductivity in sulfur hydride (critical temperature Tc of 203 K). Experimentalist have shown results on the covalent hydride phosphine (PH3) which also exhibits a high Tc > 100 K at pressure P > 200 GPa. However, neither the exact composition nor the crystal structure of the …

Continue reading

Superconductivity under high pressure at minus 70 degrees Celsius

Researchers at the Max Planck Institute for Chemistry in Mainz and the Johannes Gutenberg University Mainz observed that hydrogen sulfide becomes superconductive at minus 70 degree Celsius —when the substance is placed under a pressure of 1.5 million bar. This corresponds to half of the pressure of the earth’s core. With their high pressure experiments …

Continue reading

Superconductivity in group-IV honeycomb materials

Our work has just been published in Physical Review B  ! In this theoretical work, we studied in detail the electron-phonon superconductivity of honeycomb MX layered structures where X is one element of group IV (C, Si, or Ge) and M is an alkali or an alkaline-earth metal.  Among the studied compositions we predict a …

Continue reading

Load more