Search results for Dirac cones

General Physics Jan 5, 2016

Pure quantum-mechanical mixture of electrons and photons demonstrated in bismuth selenide

In 2013, MIT physicists showed for the first time that shining powerful mid-infrared laser light on solid bismuth selenide produces Floquet-Bloch states, which are characterized by replicas of electronic energy states inside ...

Optics & Photonics Sep 9, 2015

Physicists create exotic states that could lead to new kinds of sensors and optical devices

The Dirac cone, named after British physicist Paul Dirac, started as a concept in particle and high-energy physics and has recently became important in research in condensed matter physics and material science. It has since ...

Nanomaterials Sep 3, 2015

Phagraphene, a relative of graphene, discovered

A group of scientists from Russia, the USA and China have predicted the existence of a new two-dimensional carbon material via computer generated simulation, a "patchwork" analogue of graphene called phagraphene. The results ...

Condensed Matter Jul 14, 2015

Density-near-zero acoustical metamaterial made in China

When a sound wave hits an obstacle and is scattered, the signal may be lost or degraded. But what if you could guide the signal around that obstacle, as if the interfering barrier didn't even exist? Recently, researchers ...

Nanomaterials Apr 1, 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 ...

Space Exploration Mar 18, 2015

Extent of Moon's giant volcanic eruption is revealed

Scientists have produced a new map of the Moon's most unusual volcano showing that its explosive eruption spread debris over an area much greater than previously thought.

Materials Science Sep 9, 2014

Silicene research challenges the limitations of nanotechnology

(Phys.org) —As computer chips continue to get smaller and more powerful, the field of electronics is approaching some severe limits.

Nanomaterials May 5, 2014

High quality three-dimensional nanoporous graphene

Three-dimentional (3D) nanoporous graphene with preserved 2D Dirac electronic characters was successfully synthesized by Dr. Yoshikazu Ito and Prof. Mingwei CHEN at Advanced Institute for Materials Research (AIMR), Tohoku ...

Nanomaterials Feb 14, 2014

Scientists produce a novel form of artificial graphene

A new breed of ultra thin super-material has the potential to cause a technological revolution. "Artificial graphene" should lead to faster, smaller and lighter electronic and optical devices of all kinds, including higher ...

Condensed Matter Sep 25, 2013

Researchers present new multifunctional topological insulator material with combined superconductivity

Most materials show one function, for example, a material can be a metal, a semiconductor, or an insulator. Metals such as copper are used as conducting wires with only low resistance and energy loss. Superconductors are ...

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