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Search results for dirac

Superconductivity Mar 30, 2016

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

(Âé¶¹ÒùÔº)—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 ...

Condensed Matter Mar 21, 2016

The metal-insulator transition depends on the mass of the Dirac electrons

Scientists from the RIKEN Advanced Institute for Computational Science (AICS) in Kobe, Japan, have used the powerful K computer, along with a number of other supercomputers, to perform a large-scale analysis of the behavior ...

Optics & Photonics Mar 21, 2016

Study points the way to new photonic devices with one-way traffic lanes

Researchers at MIT and other institutions have found a new phenomenon in the behavior of a kind of quasiparticles called plasmons as they move along tiny ribbons of two-dimensional materials such as graphene and TMDs (transition ...

General Âé¶¹ÒùÔºics Feb 19, 2016

Topological insulators: Magnetism is not causing loss of conductivity

If topological insulators are doped with impurities that possess magnetic properties, they lose their conductivity. Yet contrary to what has been assumed thus far, it is not the magnetism that leads to this. This has been ...

General Âé¶¹ÒùÔºics Feb 18, 2016

Five-dimensional black hole could 'break' general relativity

Researchers have shown how a bizarrely shaped black hole could cause Einstein's general theory of relativity, a foundation of modern physics, to break down. However, such an object could only exist in a universe with five ...

Nanomaterials Feb 16, 2016

Graphene becomes superconductive—Electrons with 'no mass' flow with 'no resistance'

Graphene is a single-atomic carbon sheet with a hexagonal honeycomb network (Fig. 1). Electrons in graphene take a special electronic state called Dirac-cone where they behave as if they have no mass. This allows them to ...

Environment Feb 15, 2016

Soil mapping may indicate success of brush control method

Mapping the long-term reaction of woody plants to brush-control techniques can help landowners prioritize management practices to maximize the effectiveness of costly brush reduction, according to a Texas A&M AgriLife Research ...

Nanophysics Feb 11, 2016

A metal that behaves like water

Graphene is going to change the world—or so we've been told.

General Âé¶¹ÒùÔºics Feb 8, 2016

Chiral magnetic effect generates quantum current

Scientists at the U.S Department of Energy's (DOE) Brookhaven National Laboratory and Stony Brook University have discovered a new way to generate very low-resistance electric current in a new class of materials. The discovery, ...

General Âé¶¹ÒùÔºics Jan 26, 2016

Explainer: What is antimatter?

Antimatter was one of the most exciting physics discoveries of the 20th century. Picked up by fiction writers such as Dan Brown, many people think of it as an "out there" theoretical idea – unaware that it is actually being ...

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