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Primeur weekly 2020-05-25

Focus

InsideHPC's Rich Brueckner passes away at 58 ...

Only half of the EuroHPC countries confirmed they will participate in co-funding EuroHPC projects ...

Quantum computing

Atos and CSC empower the Finnish quantum research community with Atos Quantum Learning Machine ...

Quantum Hall effect 'reincarnated' in 3D topological materials ...

University of California Los Angeles physicists develop world's best quantum bits ...

Quantum leap: Photon discovery is a major step toward at-scale quantum technologies ...

Focus on Europe

HPC-AI Advisory Council and ISC Group continue Annual Student Cluster Competition as an online event ...

ELASTIC software architecture advances urban mobility in Florence ...

Middleware

Waste energy of LUMI supercomputer produces 20 percent of the district heat of Kajaani ...

Italy-based Do IT Systems becomes Bright Services Partner ...

Hardware

Microsoft claims to have built new supercomputer for OpenAI ...

New York University and IBM research takes electrons for a spin in moving toward more efficient, higher density data ...

GRC wins Phase I of AFWERX Programme ...

Samsung Electronics expands its foundry capacity with a new production line in Pyeongtaek, Korea ...

HPE reports Q2 results ...

Intersect360 Research invites your input in an all new survey ...

Applications

Scientists seeking therapies for deadly bacterial disease ...

2020 OLCF User Meeting will happen remote together ...

Summit supercomputer is mining for COVID-19 connections ...

A new method for unraveling complex gene interactions ...

ACM honours computing innovators for advances in research, education and industry ...

Discovery about the edge of fusion plasma could help realize fusion power ...

Superconductors with 'zeitgeist' - When materials differentiate between past and future ...

NIST team builds hybrid quantum system by entangling molecule with atom ...

BIOS IT partners with Panasas to deliver ActiveStor Ultra turnkey HPC storage appliances ...

Supercomputer model simulations reveal cause of Neanderthal extinction ...

Pittsburgh Supercomputing Center is supporting COVID-19 research ...

The Cloud

New technique separates industrial noise from natural seismic signals ...

Lyell Immunopharma goes all-in on AWS as its Cloud provider ...

WekaIO furthers Weka AI by integrating with deep learning pipeline management solution from Valohai ...

Superconductors with 'zeitgeist' - When materials differentiate between past and future


Magnetic fields inside a superconductor with broken time-reversal symmetry: Red and blue arrows illustrate the direction and strength of the internal magnetic fields for forward and backward time development. Credit: Hans-Henning Klauss.
18 May 2020 Dresden - What happened yesterday and what will happen tomorrow are usually two different and quite independent matters. The past and the future of human life are not symmetric and therefore not reversible. In physics, this is different. The fundamental forces of nature in elementary particles, atoms and molecules are symmetric with respect to their development in time: Forwards or backwards makes no difference, scientists call this a time-reversal symmetry.

For decades this symmetry was also found in all superconductors. Superconductors are materials which can conduct electrical currents at low temperatures without energy dissipation. One of their major applications is the efficient generation of strong magnetic fields, for example in magnetic resonance imaging (MRI) diagnosis.

Approximately 99% of all known superconducting materials are time-reversal symmetric.

However, for some years, physicists have been discovering new superconductors which brake time-reversal symmetry. To explain these observations, the basic mechanism of superconductivity, which has been known for more than 75 years, had to be modified considerably. Only these novel superconductors are able to spontaneously generate constant internal magnetic fields. This can lead to new applications, for example in quantum computing devices.

An international research team led by Dr. Vadim Grinenko und Prof. Hans-Henning Klauss from the Institute of Solid State and Materials Physics at TU Dresden discovered this new magnetic state with broken time-reversal symmetry in iron-based superconductors. The synthesis of this versatile class of intermetallic compounds is comparatively simple. Therefore, these iron-based superconductors have an enormous potential for applications.

"In our study, we show that the iron-based superconductors discovered more than twelve years ago continue to reveal new quests for fundamental research as well as chances for new applications", stated Prof. Hans-Henning Klauss.

V. Grinenko, R. Sarkar, K. Kihou, C.H. Lee, I. Morozov, S. Aswartham, B. Büchner, P. Chekhonin, W. Skrotzki, K. Nenkov, R. Hühne, K. Nielsch, S.-L. Drechsler, V.L. Vadimov, M.A. Silaev, P.A. Volkov, I. Eremin, H. Luetkens, and H.-H. Klauss are the authors of the paper titled " Superconductivity with broken time-reversal symmetry inside a superconducting s-wave state ". The study has been published inNature Physics, 10.1038/s41567-020-0886-9.
Source: Technische Universität Dresden

Back to Table of contents

Primeur weekly 2020-05-25

Focus

InsideHPC's Rich Brueckner passes away at 58 ...

Only half of the EuroHPC countries confirmed they will participate in co-funding EuroHPC projects ...

Quantum computing

Atos and CSC empower the Finnish quantum research community with Atos Quantum Learning Machine ...

Quantum Hall effect 'reincarnated' in 3D topological materials ...

University of California Los Angeles physicists develop world's best quantum bits ...

Quantum leap: Photon discovery is a major step toward at-scale quantum technologies ...

Focus on Europe

HPC-AI Advisory Council and ISC Group continue Annual Student Cluster Competition as an online event ...

ELASTIC software architecture advances urban mobility in Florence ...

Middleware

Waste energy of LUMI supercomputer produces 20 percent of the district heat of Kajaani ...

Italy-based Do IT Systems becomes Bright Services Partner ...

Hardware

Microsoft claims to have built new supercomputer for OpenAI ...

New York University and IBM research takes electrons for a spin in moving toward more efficient, higher density data ...

GRC wins Phase I of AFWERX Programme ...

Samsung Electronics expands its foundry capacity with a new production line in Pyeongtaek, Korea ...

HPE reports Q2 results ...

Intersect360 Research invites your input in an all new survey ...

Applications

Scientists seeking therapies for deadly bacterial disease ...

2020 OLCF User Meeting will happen remote together ...

Summit supercomputer is mining for COVID-19 connections ...

A new method for unraveling complex gene interactions ...

ACM honours computing innovators for advances in research, education and industry ...

Discovery about the edge of fusion plasma could help realize fusion power ...

Superconductors with 'zeitgeist' - When materials differentiate between past and future ...

NIST team builds hybrid quantum system by entangling molecule with atom ...

BIOS IT partners with Panasas to deliver ActiveStor Ultra turnkey HPC storage appliances ...

Supercomputer model simulations reveal cause of Neanderthal extinction ...

Pittsburgh Supercomputing Center is supporting COVID-19 research ...

The Cloud

New technique separates industrial noise from natural seismic signals ...

Lyell Immunopharma goes all-in on AWS as its Cloud provider ...

WekaIO furthers Weka AI by integrating with deep learning pipeline management solution from Valohai ...