Search results for dirac

General Physics May 08, 2019

Physicists 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 Physics and Technology and ...

Plasma Physics 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 Physics Mar 07, 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 ...

General Physics 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,' ...

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 Physics Apr 05, 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 Physics 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 ...

Superconductivity Mar 30, 2016

Cool under pressure: Superconductivity in 3D Dirac semimetal zirconium pentatelluride

(Phys.org)—Due to their electronic and magnetic properties and their association with crystalline and electronic structures under extreme conditions, three-dimensional (3D) Dirac semimetals – that is, materials that possess ...

Nanomaterials Apr 01, 2015

Two-dimensional Dirac materials: Structure, properties, and rarity

Graphene, a two-dimensional (2D) honeycomb sheet composed of carbon atoms, has attracted intense interests worldwide because of its outstanding properties and promising prospects in both basic and applied science. The great ...

General Physics Mar 31, 2016

Discovery of a magnet capable of controlling Dirac fermions with zero mass

A group of researchers from Osaka University and The University of Tokyo succeeded in synthesizing two-dimensional layers of bismuth (Bi) with Dirac electrons and magnetic multilayer blocks of europium.

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