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Primeur weekly 2016-08-22

Special

ExaCT team shows how Legion S3D code is a tribute to co-design on the way to exascale supercomputing ...

Focus

Sunway TaihuLight's strengths and weaknesses highlighted by Jack Dongarra ...

Exascale supercomputing

Big PanDA tackles Big Data for physics and other future extreme scale scientific applications ...

Computer programming made easier ...

Quantum computing

Cryptographers from the Netherlands win 2016 Internet Defense Prize ...

Focus on Europe

STFC Daresbury Laboratory to host 2016 Hands-on Tutorial on CFD using open-source software Code_Saturne ...

Middleware

Germany joins ELIXIR ...

Columbus Collaboratory announces CognizeR, an Open Source R extension that accelerates data scientists' access to IBM Watson ...

Cycle Computing optimizes NASA tree count and climate impact research ...

GPU-accelerated computing made better with NVIDIA DCGM and PBS Professional ...

Hardware

Mellanox demonstrates accelerated NVMe over Fabrics at Intel Developers Forum ...

Nor-Tech has developed the first affordable supercomputers designed to be used in an office, rather than a data centre ...

NVIDIA CEO delivers world's first AI supercomputer in a box to OpenAI ...

AMD demonstrates breakthrough performance of next-generation Zen processor core ...

CAST and PLDA Group demonstrate x86-compliant high compression ratio GZIP acceleration on FPGA, accessible to non-FPGA experts using the QuickPlay software defined FPGA development tool ...

IBM Research - Almaden celebrates 30 years of innovation in Silicon Valley ...

Wiring reconfiguration saves millions for Trinity supercomputer ...

Cavium completes acquisition of QLogic ...

Applications

Soybean science blooms with supercomputers ...

NOAA launches America's first national water forecast model ...

Computers trounce pathologists in predicting lung cancer type, severity, researchers find ...

Star and planetary scientists get millions of hours on EU supercomputers ...

Bill Gropp named acting director of NCSA ...

Latest NERSC/Intel/Cray dungeon session yields impressive code speed-ups ...

User-friendly language for programming efficient simulations ...

New book presents how deep learning neural networks are designed ...

Liquid light switch could enable more powerful electronics ...

Energy Department to invest $16 million in computer design of materials ...

Pitt engineers receive grant to develop fast computational modelling for 3D printing ...

Environmental datasets help researchers double the number of microbial phyla known to be infected by viruses ...

Teaching machines to direct traffic through deep reinforcement learning ...

Simulations by PPPL physicists suggest that magnetic fields can calm plasma instabilities ...

New material discovery allows study of elusive Weyl fermion ...

New maths to predict dangerous hospital epidemics ...

Kx financial analytics technology tackles Big Data crop research at biotech leader Earlham Institute ...

The Cloud

New hacking technique imperceptibly changes memory virtual servers ...

New material discovery allows study of elusive Weyl fermion

15 Aug 2016 Ames - Researchers at the U.S. Department of Energy's Ames Laboratory have discovered a new type of Weyl semimetal, a material that opens the way for further study of Weyl fermions, a type of massless elementary particle hypothesized by high-energy particle theory and potentially useful for creating high-speed electronic circuits and quantum computers.

Researchers created a crystal of molybdenum and tellurium, one of only a few compounds that had been predicted to host a new and recently postulated type of Weyl state, where the hole and electron bands normally separated by an indirect gap touch at a few Weyl points. Those points are equivalent to magnetic monopoles in the momentum space and are connected by Fermi arcs.

A combination of angle resolved photoemission spectroscopy (ARPES), modelling, density functional theory and careful calculations were used to confirm the existence of this new type of Weyl semimetal.

This material provides an exciting new platform to study the properties of Weyl fermions, and may lead the way to more new materials with unusual transport properties.

"This an important, interdisciplinary discovery because it allows us to study many aspects of these exotic particles predicted by high energy physics theory in solid state, without need for extremely expensive particle accelerators", stated Adam Kaminsky, Ames Laboratory scientist and professor in the Department of Physics and Astronomy at Iowa State University. "From my perspective as solid state physicist it is absolutely extraordinary to observe two bands touching each other at certain points and being connected by Fermi arcs - objects that are prohibited to exist in 'ordinary' materials."

The research is further discussed in a paper, " Spectroscopic evidence for a type II Weyl semimetallic state in MoTe2 ", authored by Lunan Huang, Timothy M. McCormick, Masayuki Ochi, Zhiying Zhao, Michi-To Suzuki, Ryotaro Arita, Yun Wu, Daixiang Mou, Huibo Cao, Jiaqiang Yan, Nandini Trivedi and Adam Kaminski; and published inNature Materials.

Source: DOE/Ames Laboratory

Back to Table of contents

Primeur weekly 2016-08-22

Special

ExaCT team shows how Legion S3D code is a tribute to co-design on the way to exascale supercomputing ...

Focus

Sunway TaihuLight's strengths and weaknesses highlighted by Jack Dongarra ...

Exascale supercomputing

Big PanDA tackles Big Data for physics and other future extreme scale scientific applications ...

Computer programming made easier ...

Quantum computing

Cryptographers from the Netherlands win 2016 Internet Defense Prize ...

Focus on Europe

STFC Daresbury Laboratory to host 2016 Hands-on Tutorial on CFD using open-source software Code_Saturne ...

Middleware

Germany joins ELIXIR ...

Columbus Collaboratory announces CognizeR, an Open Source R extension that accelerates data scientists' access to IBM Watson ...

Cycle Computing optimizes NASA tree count and climate impact research ...

GPU-accelerated computing made better with NVIDIA DCGM and PBS Professional ...

Hardware

Mellanox demonstrates accelerated NVMe over Fabrics at Intel Developers Forum ...

Nor-Tech has developed the first affordable supercomputers designed to be used in an office, rather than a data centre ...

NVIDIA CEO delivers world's first AI supercomputer in a box to OpenAI ...

AMD demonstrates breakthrough performance of next-generation Zen processor core ...

CAST and PLDA Group demonstrate x86-compliant high compression ratio GZIP acceleration on FPGA, accessible to non-FPGA experts using the QuickPlay software defined FPGA development tool ...

IBM Research - Almaden celebrates 30 years of innovation in Silicon Valley ...

Wiring reconfiguration saves millions for Trinity supercomputer ...

Cavium completes acquisition of QLogic ...

Applications

Soybean science blooms with supercomputers ...

NOAA launches America's first national water forecast model ...

Computers trounce pathologists in predicting lung cancer type, severity, researchers find ...

Star and planetary scientists get millions of hours on EU supercomputers ...

Bill Gropp named acting director of NCSA ...

Latest NERSC/Intel/Cray dungeon session yields impressive code speed-ups ...

User-friendly language for programming efficient simulations ...

New book presents how deep learning neural networks are designed ...

Liquid light switch could enable more powerful electronics ...

Energy Department to invest $16 million in computer design of materials ...

Pitt engineers receive grant to develop fast computational modelling for 3D printing ...

Environmental datasets help researchers double the number of microbial phyla known to be infected by viruses ...

Teaching machines to direct traffic through deep reinforcement learning ...

Simulations by PPPL physicists suggest that magnetic fields can calm plasma instabilities ...

New material discovery allows study of elusive Weyl fermion ...

New maths to predict dangerous hospital epidemics ...

Kx financial analytics technology tackles Big Data crop research at biotech leader Earlham Institute ...

The Cloud

New hacking technique imperceptibly changes memory virtual servers ...