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General Âé¶¹ÒùÔºics May 8, 2019

Âé¶¹ÒùÔºicists propose perfect material for lasers

Weyl semimetals are a recently discovered class of materials in which charge carriers behave the way electrons and positrons do in particle accelerators. Researchers from the Moscow Institute of Âé¶¹ÒùÔºics and Technology and ...

Condensed Matter Apr 18, 2019

Demonstrating a weak topological insulator in bismuth iodide

Topological insulators are one of the most exciting discoveries of the 21st century. They can be simply described as materials that conduct electricity on their surface or edge, but are insulating in their interior bulk. ...

General Âé¶¹ÒùÔºics Apr 5, 2019

Getting a big look at tiny particles

At the turn of the 20th century, scientists discovered that atoms were composed of smaller particles. They found that inside each atom, negatively charged electrons orbit a nucleus made of positively charged protons and neutral ...

General Âé¶¹ÒùÔºics Mar 28, 2019

Studying chiral exchange drag and chirality oscillations in synthetic antiferromagnets

A quasiparticle is a disturbance or excitation (e.g. spin waves, bubbles, etc.) that behaves as a particle and could therefore be regarded as one. Long-range interactions between quasiparticles can give rise to a 'drag,' ...

General Âé¶¹ÒùÔºics Mar 21, 2019

CERN: Study sheds light on one of physics' biggest mysteries – why there's more matter than antimatter

Why do we exist? This is arguably the most profound question there is and one that may seem completely outside the scope of particle physics. But our new experiment at CERN's Large Hadron Collider has taken us a step closer ...

Plasma Âé¶¹ÒùÔºics Mar 13, 2019

Quantum-critical conductivity of the Dirac fluid in graphene

Graphene is expected to behave like a quantum-critical, relativistic plasma known as "Dirac fluid" near charge neutrality in which massless electrons and holes rapidly collide. In a recent study now published in Science, ...

Plasma Âé¶¹ÒùÔºics Mar 7, 2019

Researchers turn liquid metal into a plasma

Most laypersons are familiar with the three states of matter as solids, liquids, and gases. But there are other forms that exist. Plasmas, for example, are the most abundant form of matter in the universe, found throughout ...

Quantum Âé¶¹ÒùÔºics Mar 4, 2019

Ultracold atoms could provide 2-D window to exotic 1-D physics

Rice University physicists Matthew Foster and Seth Davis want to view a vexing quantum puzzle from an entirely new perspective. They just need the right vantage point and a place colder than deep space.

Astronomy Jan 10, 2019

Astronomers find signatures of a 'messy' star that made its companion go supernova

Many stars explode as luminous supernovae when, swollen with age, they run out of fuel for nuclear fusion. But some stars can go supernova simply because they have a close and pesky companion star that, one day, perturbs ...

General Âé¶¹ÒùÔºics Jan 10, 2019

Common frame for analyzing complex systems in physics and economics

Scientists often need to make sense of complex systems without knowing the important parameters or even without access to all the information. A collaboration of network theorists has reported a common frame for addressing ...

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