Subscribe to our free daily newsletters
  Energy News  




Subscribe to our free daily newsletters



ENERGY TECH
'Perfectly frustrated' metal provides possible path to superconductivity
by Staff Writers
Ames IA (SPX) Nov 13, 2017


A diagram modeling competing or "frustrated" magnetic states in neighboring electrons. Condensed matter physicists use the term "frustrated" to describe a kind of magnet in which the spins fail to align into stable magnetic order. Their unique properties are of interest in the development of quantum computing and high-temperature superconductivity.

The U.S. Department of Energy's Ames Laboratory has discovered and described the existence of a unique disordered electron spin state in a metal that may provide a unique pathway to finding and studying frustrated magnets.

Condensed matter physicists use the term "frustrated" to describe a kind of magnet in which the spins fail to align into stable magnetic order. In perfectly frustrated magnets called spin liquids, the disordered magnetism of these materials persists even at very low temperatures, and their unique properties are of interest in the development of quantum computing and high-temperature superconductivity.

The materials investigated to search for this perfectly frustrated magnetic state are typically insulators. But Ames Laboratory researchers were able to define a "perfectly frustrated" state in a metallic material, CaCo1.86As2.

"Perfectly frustrated systems, ones that really cannot resolve their magnetic states, are difficult to find in the first place, but even more so in a metal," said Rob McQueeney, scientist at Ames Laboratory.

In insulating magnets, the interactions between spins that lead to frustration are set by the crystal structure of the lattice, and are relatively immutable. The discovery of this nearly perfectly frustrated metal provides a new avenue for tinkering with the magnetic interactions to achieve perfect frustration.

"Here, we have a little knob that we can tune. We know that some of these interactions that lead to frustration are mediated by conduction electrons, and we can tune a number of those very accurately--maybe you get a superconductor, maybe some other novel quantum state. There's a lot of promise there."

This research is further discussed in the paper "Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2," authored by A. Sapkota, B.G. Ueland, V.K. Anand, N.S. Sangeetha, D.L. Abernathy, M.B. Stone J.L. Niedziela, D.C. Johnston, A. Kreyssig, A.I. Goldman, and R.J. McQueeney; and published in Physical Review Letters.

ENERGY TECH
A novel layered superconductor based on tin and arsenic
Tokyo, Japan (SPX) Nov 10, 2017
The layered superconducting material is characterized by a crystal structure in which a SnAs layer (wherein Sn and As are two-dimensionally bonded to develop superconductivity) and a Na layer (the spacer layer) are alternately laminated. Considering that such a layered structure is similar to that of a cuprate- or iron-based high-temperature (high-Tc) superconductor, it is possible that in SnAs- ... read more

Related Links
Ames Laboratory
Powering The World in the 21st Century at Energy-Daily.com


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

ENERGY TECH
Improving sensor accuracy to prevent electrical grid overload

Japan faces challenges in cutting CO2, Moody's finds

IEA: An electrified world would cost $31B per year to achieve

'Fuel-secure' steps in Washington counterintuitive, green group says

ENERGY TECH
'Perfectly frustrated' metal provides possible path to superconductivity

Scientists make progress in quest for fusion energy

Cool textiles to beat the heat

A novel layered superconductor based on tin and arsenic

ENERGY TECH
New York sets high bar for wind energy

Construction to begin on $160 million Industry Leading Hybrid Renewable Energy Project

A kite that might fly

Scotland outreach to Canada yields wind energy investment

ENERGY TECH
China Saves the World, and America Too by Going Off-The-Grid

In Morocco, a blue tourist town is turning green

Mechanochemistry paves the way to higher quality perovskite photovoltaics

OMCO Solar expands to met demand for field-fast racking systems

ENERGY TECH
AREVA NP introduces FORERUNNER robot to optimize steam generator inspections

France backtracks on nuclear power reduction target

Nuclear energy programs may not increase likelihood of proliferation

Bulgaria extends life of Soviet-era nuclear reactor

ENERGY TECH
Sandia speeds transformation of biofuel waste into wealth

Study identifies additional hurdle to widespread planting of bioenergy crops

Penn researchers mimic giant clams to enhance the production of biofuel

Research aims to help renewable jet fuel take flight

ENERGY TECH
An effective solution for collecting spilled petroleum

Oil price response to OPEC report on demand muted

Statoil makes headway with Barents Sea field development

Iraq targets 1 million bpd output for disputed Kirkuk oilfields

ENERGY TECH
Scientists warn of 'giant leap backward' at climate talks

Heat on 'climate chancellor' Merkel over coal and cars

Climate target too low and progress too slow: top scientist

US defends fossil fuels at UN climate meeting




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement