Search results for Dirac cones

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 ...

General Physics Mar 13, 2013

Scientists discover how photon beam can flip the spin polarization of electrons emitted from topological insulator

(Phys.org) —Plain-looking but inherently strange crystalline materials called 3D topological insulators (TIs) are all the rage in materials science. Even at room temperature, a single chunk of TI is a good insulator in the ...

Nanomaterials Feb 8, 2013

Blocking infinity in a topological insulator

(Phys.org)—In bulk, topological insulators (TIs) are good insulators, but on their surface they act as metals, with a twist: the spin and direction of electrons moving across the surface of a TI are locked together. TIs offer ...

General Physics Jan 18, 2013

New class of magnets where fewer electrons mean stronger magnetism could lead to new energy-saving technologies

Magnetism in semiconductors arises mainly through the interaction of magnetic ions and electrons. Normally, the more electrons contribute to the magnetism, the stronger the magnet. However, researchers at the RIKEN Advanced ...

Condensed Matter May 15, 2012

Beyond the high-speed hard drive: Topological insulators open a path to room-temperature spintronics

(Phys.org) -- Strange new materials experimentally identified just a few years ago are now driving research in condensed-matter physics around the world. First theorized and then discovered by researchers at the Lawrence ...

Nanomaterials Apr 26, 2012

Graphene found to emit infrared light

(Phys.org) -- Ever since its discovery in 2004, graphene, the honey-comb arranged sheet of one atom thick carbon atoms, has continued to make waves in both the physics and engineering worlds. Now comes news from yet another ...

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