Sentences with phrase «electron pairing in»

First experimental evidence of «orbital - selective» electron pairing in an iron - based high - temperature superconductor.

«Electron orbitals may hold key to unifying concept of high - temperature superconductivity: First experimental evidence of «orbital - selective» electron pairing in an iron - based high - temperature superconductor.»

The effect appeared in a variety of transparent materials, says Jorio, and it was observed at room temperature, unlike electron pairing in superconductors.

A few years ago, researchers from the University of Cambridge showed that it was possible to create electron pairs in which the spins are aligned: up - up or down - down.

Not exact matches

This chummy behavior resembles how electrons pair up in materials that conduct current without resistance, known as superconductors, researchers report in a paper accepted in Physical Review Letters.

PHOTON PAIRS Laser light in water (shown) exhibits an unexpected quirk: Light particles interact with their companions in the same way electrons pair up in superconductors.

How far it goes in depends on the nature of the electron pairing, and changes as the material is cooled down further and further.

In an ordinary superconductor, electrons, which carry a spin of 1/2, pair up and flow uninhibited with the help of vibrations in the atomic structurIn an ordinary superconductor, electrons, which carry a spin of 1/2, pair up and flow uninhibited with the help of vibrations in the atomic structurin the atomic structure.

When the incoming electron meets the superconductor, it pairs up with another electron in the material to form a duo known as a Cooper pair.

In a magnet, the electron spins are all aligned; in a semiconductor, they're arranged in opposite pairIn a magnet, the electron spins are all aligned; in a semiconductor, they're arranged in opposite pairin a semiconductor, they're arranged in opposite pairin opposite pairs.

The ridges cut into a new device's crystal (seen here in a scanning electron microscope image) collectively act as a pair of mirrors.

They found they could capture the essential features of these complicated materials, containing vast numbers of interacting electrons, with just a single rule: Electrons can move randomly from one atom to another within a given sample, but they can only move electrons, with just a single rule: Electrons can move randomly from one atom to another within a given sample, but they can only move Electrons can move randomly from one atom to another within a given sample, but they can only move in pairs.

This field generated electron - hole pairs in the adjacent dots; these pairs recombine, producing photons, the team reports in the 10 June issue of Nature.

The zirconium sapped the loyalty of the electrons bonding the nitrogen pairs, weakening the link between the two atoms and letting hydrogen weasel in and latch onto the nitrogen.

A quick flash of laser light aimed at the well generates pairs of electrons and positively charged «holes» in the middle layer.

In this theory, a Lewis acid is any chemical species that attracts free electron pairs.

Elementary chemistry distinguishes two kinds of strong bonds between atoms in molecules: the covalent bond, where bonding arises from valence electron pairs shared between neighboring atoms, and the ionic bond, where transfer of electrons from one atom to another leads to Coulombic attraction between the resulting ions.

By contrast, when graphene was coupled to superconducting PCCO in the Cambridge - led experiment, the results suggested that the electron pairs within graphene were in a p - wave state.

So figuring out what is keeping electron pairs together at nearly 40 K in MgB2 has become the latest contest in the most competitive area of materials physics.

But in rare cases molecules with an even number of electrons can behave like radicals, because the arrangement of their atoms prevents all the electrons from finding partners with which to pair up.

Caltech chemist Jacqueline Barton's work implicates the DNA base - pair stack in electron transfer, which allows its use as a semiconductor.

In the first step, incoming photons — packets of light — are converted to pairs of negatively - charged electrons and corresponding positively - charged «holes» that then separate from each other.

Superconductivity occurs when electrons come together in a material in Cooper pairs that can move unimpeded through the material.

Physics and chemistry professor Ahmed Zewail and his colleagues at the California Institute of Technology married two previously independent lines of research: femtochemistry, in which pairs of brief laser pulses initiate and monitor a chemical reaction, and electron diffraction, in which a molecule's structure is determined from the scatter of electrons fired at a crystal containing billions of copies of that molecule.

In a superconductor, certain electrons seek a mate and combine into pairs.

The phenomenon of broken symmetry can only be explained if the electrons in this material form special Cooper pairs, namely spin - triplet pairs, instead of the usual spin - singlet pairs.

This cascading process occurs in many pairs of excited atoms, resulting in the emission of a large number of low - energy electrons.

The theory provides a guideline in controlling electron energy which is important for applications such as ion acceleration and pair plasma creation.

You and Bob also share a pair of electrons — you have one, Bob has the other — and they're in an entangled state such that if yours is spinning up, his is spinning down, and conversely.

Researchers have long recognized the promise of functional organic polymers, but until now have not been successful in developing an efficient electron - transport conducting polymer to pair with the established hole - transporting polymers.

The results confirmed that it was the superconductivity in the tubes that was driving electron pairs together.

Two electrons mutually attracted to positively charged ions in the material lattice can couple to form a Cooper pair, which is crucial for superconductivity.

Electrons zipping through a thin layer of strontium titanate interact and form pairs at higher temperatures than expected, researchers report in the May 14 Nature.

At the annual meeting of the American Physical Society and in the 12 March issue of Physical Review Letters, Kociak and his colleagues at the French national research agency CNRS and the Russian Academy of Sciences in Chernogolovka showed that empty nanotubes can also carry electron pairs between nonsuperconducting electrodes (in this case, metal pads made from a sandwich of aluminum oxide, platinum, and gold).

Superconductivity is based on the fact that in certain materials electrons can pair up which — at a higher temperature — would otherwise repel each other.

But whereas those materials were made up of covalent bonds — in which pairs of atoms share electrons — these 2 - D metals are composed of metallic bonds, where electrons flow more freely among atoms.

The magnetism is associated with the localization of electrons, whereas superconductivity is a state in which electrons are paired and can flow without resistance.

The gamma rays can also be stopped in their tracks if they collide with other photons to produce pairs of electrons and their antiparticles.

Now, a pair of scientists from the U.S. Department of Energy's Brookhaven National Laboratory and Ludwig Maximilian University in Munich have proposed the first solution to such subatomic stoppage: a novel way to create a more robust electron wave by binding together the electron's direction of movement and its spin.

In the neutrinos» case, Cohen and Glashow calculate that the wake would mostly consist of electrons paired with their antimatter twins, positrons.

In contrast, the relatively high - temperature superconductors are thought to work when electrons are paired at the average distance between them — and this is what was seen between the atoms in this fermionic condensatIn contrast, the relatively high - temperature superconductors are thought to work when electrons are paired at the average distance between them — and this is what was seen between the atoms in this fermionic condensatin this fermionic condensate.

In a conventional superconductor electrons with opposite spins are paired together so that a flow of electrons carries zero spin.

Now, the same researchers have found a set of materials which encourage the pairing of spin - aligned electrons, so that a spin current flows more effectively in the superconducting state than in the non-superconducting (normal) state.

The light creates an electron - hole pair that subsequently migrates in opposing directions.

In the paper, Glashow and Cohen point out that if neutrinos can travel faster than light, then when they do so they should sometimes radiate an electron paired with its antimatter equivalent — a positron — through a process called Cerenkov radiation, which is analogous to a sonic boom.

In a series of experiments, the team fired an unspeakably brief, extremely ultraviolet laser pulse at a helium atom to start exciting its pair of electrons.

What makes this possible is a bizarre phenomenon known as entanglement, in which a pair of particles have complementary characteristics, such as two electrons spinning in opposite directions.

The theory predicts that the points come in pairs, so that a departing electron will make the return trip through the partner point.

Yi's work focuses on hightemperature superconductivity, a phenomenon in which electrons coherently pair up to travel without resistance in a material at a relatively high temperature.

Normally electrons pair up and cancel out each other's magnetism, but Hicks says the organic molecules used in the experiment were selected because they can tolerate extra electrons.