Doe Science news source
The DOE Science News Source is a Newswise initiative to promote research news from the Office of Science of the DOE to the public and news media.
  • 2018-02-13 12:05:35
  • Article ID: 689468

Missing Link to Novel Superconductivity Revealed at Ames Laboratory

Scientists at the U.S. Department of Energy’s Ames Laboratory have discovered a state of magnetism that may be the missing link to understanding the relationship between magnetism and unconventional superconductivity. The research, recently published in npj Nature Quantum Materials, provides tantalizing new possibilities for attaining superconducting states in iron-based materials.

“In the research of quantum materials, it’s long been theorized that there are three types of magnetism associated with superconductivity. One type is very commonly found, another type is very limited and only found in rare situations, and this third type was unknown, until our discovery,” said Paul Canfield, a senior scientist at Ames Laboratory and a Distinguished Professor and the Robert Allen Wright Professor of Physics and Astronomy at Iowa State University.

The scientists suspected that the material they studied, the iron arsenide CaKFe4As4 , was such a strong superconductor because there was an associated magnetic ordering hiding nearby. Creating a variant of the compound by substituting in cobalt and nickel at precise locations, called “doping,” slightly distorted the atomic arrangements which induced the new magnetic order while retaining its superconducting properties.

“The resources of the national laboratories were essential for providing for the diversity of techniques needed to reveal this new magnetic state,” said Canfield. “We’ve been able to stabilize it, it’s robust, and now we’re able study it. We think by understanding the three different types of magnetism that can give birth to iron-based superconductors, we’ll have a better sense of the necessary ingredients for this kind of superconductivity.”

The research is further discussed in the paper, “Hedgehog spin-vortex crystal stabilized in a hole-doped iron-based superconductor,” authored by William R. Meier, Qing-Ping Ding, Andreas Kreyssig, Sergey L. Bud’ko, Aashish Sapkota, Karunakar Kothapalli, Vladislav Borisov, Roser Valentí, Cristian D. Batista, Peter P. Orth, Rafael M. Fernandes, Alan I. Goldman, Yuji Furukawa, Anna E. Böhmer, and Paul C. Canfield; and published in the journal npj Nature Quantum Materials.

This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory.

Ames Laboratory is a U.S. Department of Energy Office of Science national laboratory operated by Iowa State University. Ames Laboratory creates innovative materials, technologies and energy solutions. We use our expertise, unique capabilities and interdisciplinary collaborations to solve global problems. 

DOE’s Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time.  For more information, please visit science.energy.gov

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Carbon Nanotube Optics Poised to Provide Pathway to Optical-Based Quantum Cryptography and Quantum Computing

Researchers at Los Alamos and partners in France and Germany are exploring the enhanced potential of carbon nanotubes as single-photon emitters for quantum information processing. Their analysis of progress in the field is published in this week's edition of the journal Nature Materials.

New Tech Uses Isomeric Beams to Study How and Where the Galaxy Makes One of Its Most Common Elements

A new measurement using a beam of aluminum-26 prepared in a metastable state allows researchers to better understand the creation of the elements in our galaxy.

Scientists Use Neutrons to Take a Deeper Look at Record Boost in Thermoelectric Efficiency

Neutron facilities at Oak Ridge National Laboratory are aiding scientists in research to boost the power and efficiency of thermoelectric materials. These performance increases could enable more cost-effective and practical uses for thermoelectrics, with wider industry adoption, to improve fuel economy in vehicles, make power plants more efficient, and advance body heat-powered technologies for watches and smartphones.

The science behind pickled battery electrolytes

Argonne material scientists have discovered a reaction that helps explain the behavior of a key electrolyte additive used to boost battery performance.

Faster, Cheaper, Better: A New Way to Synthesize DNA

Researchers at the Department of Energy's Joint BioEnergy Institute (JBEI) based at Berkeley Lab have pioneered a new way to synthesize DNA sequences through a creative use of enzymes that promises to be faster, cheaper, and more accurate. DNA synthesis is a fundamental tool in the rapidly growing field of synthetic biology, in which organisms can be engineered to do things like decompose plastic and manufacture biofuels and medicines. This discovery could dramatically accelerate the pace of scientific discovery.

Scientists Create Continuously Emitting Microlasers With Nanoparticle-Coated Beads

Researchers have found a way to convert nanoparticle-coated microscopic beads into lasers smaller than red blood cells. These microlasers, which convert infrared light into light at higher frequencies, are among the smallest continuously emitting lasers of their kind ever reported and can constantly and stably emit light for hours at a time, even when submerged in biological fluids such as blood serum.

New Material for Splitting Water

Solar energy is clean and abundant, but when the sun isn't shining, you must store the energy in batteries or through a process called photocatalysis. In photocatalytic water splitting, sunlight separates water into hydrogen and oxygen. The hydrogen and oxygen can then be recombined in a fuel cell to release energy. Now, a new class of materials -- halide double perovskites -- may have just the right properties to split water, according to a newly published paper in Applied Physics Letters.

Large Outdoor Study Shows Biodiversity Improves Stability of Algal Biofuel Systems

A diverse mix of species improves the stability and fuel-oil yield of algal biofuel systems, as well as their resistance to invasion by outsiders, according to the findings of a federally funded outdoor study by University of Michigan researchers.

SLAC, Stanford Scientists Discover How a Hardy Microbe's Crystalline Shell Helps it Reel in Food

SLAC and Stanford scientists have discovered how some archaea thrive where other organisms would starve: Their crystalline shells not only protect them from the environment, but they also draw in nutrients through nanosized pores. Those nutrients concentrate in the space between the shell and the microbial cell, so what looks like a famine turns into a feast.

Scientists Make the First Molecular Movie of One of Nature's Most Widely Used Light Sensors

Scientists have made the first molecular movie of the instant when light hits a sensor that's widely used in nature for probing the environment and harvesting energy from light. The sensor, a form of vitamin A known as retinal, is central to a number of important light-driven processes in people, animals, microbes and algae, including human vision and some forms of photosynthesis, and the movie shows it changing shape in a trillionth of an eye blink.


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Professor Emily Liu Receives $1.8 Million DoE Award for Solar Power Systems Research

Li (Emily) Liu, associate professor of nuclear engineering and engineering physics in the Department of Mechanical, Aerospace, and Nuclear Engineering at Rensselaer Polytechnic Institute, has been selected by the U.S. Department of Energy Solar Energy Technologies Office (SETO) to receive a $1.8 million award to study high-temperature molten-salt properties and corrosion mechanisms.

Vasilis Fthenakis Receives IEEE's William R. Cherry Award

UPTON, NY; Vasilis Fthenakis, a Senior Scientist Emeritus at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory and Founder and Director of the Center for Life Cycle Analysis at Columbia University, will receive the 2018 William R. Cherry Award from the Institute of Electrical & Electronics Engineers (IEEE).

New PPPL director Steve Cowley is honored with knighthood by Queen Elizabeth II

Steven Cowley, newly named director of the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) effective July 1, has received a knighthood from Queen Elizabeth "for services to science and the development of nuclear fusion."

UVA Darden Releases Policy Playbook Identifying Six Actions to Catalyze Clean-Tech Innovation

Moving the needle on climate change will require substantive and disruptive innovation across multiple industry sectors. Public and private investment focused on a few key areas could have a significant impact, according to a new policy playbook released by the Batten Institute for Entrepreneurship and Innovation on 8 June.

Work Begins on New SLAC Facility for Revolutionary Accelerator Science

The Department of Energy's SLAC National Accelerator Laboratory has started to assemble a new facility for revolutionary accelerator technologies that could make future accelerators 100 to 1,000 times smaller and boost their capabilities.

Oak Ridge National Laboratory Launches America's New Top Supercomputer for Science

The U.S. Department of Energy's Oak Ridge National Laboratory unveiled Summit as the world's most powerful and smartest scientific supercomputer.

Takeuchi Receives European Inventor Award 2018 in the Non-EPO Countries Category

Prolific patent-holder won for inventing battery that increases the lifespan of implantable defibrillators fivefold, greatly reducing need for reoccurring surgery

Steve Kevan Named Next Director of Berkeley Lab's Advanced Light Source

After an international search, Stephen D. "Steve" Kevan has been named the new director of the Advanced Light Source (ALS) at the U.S. Department of Energy's Lawrence Berkeley National Laboratory.

International corrosion society elects first Sandia fellow

Sandia National Laboratories materials scientist David Enos has been elected a fellow of NACE International, the chief professional society for corrosion engineering. He is the first Sandia employee to receive the honor.

Power to the People

The University of Utah College of Engineering has received a $2 million grant to create a laboratory and develop new technology for communities with backup power sources, known as microgrids, so they can quickly and more securely operate in the event of a massive power outage due to a natural disaster or cyberattack.


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New Tech Uses Isomeric Beams to Study How and Where the Galaxy Makes One of Its Most Common Elements

A new measurement using a beam of aluminum-26 prepared in a metastable state allows researchers to better understand the creation of the elements in our galaxy.

Simulations of Magnetically Confined Plasmas Reveal a Self-Regulating Stabilizing Mechanism

A mysterious mechanism that prevents instabilities may be similar to the process that maintains the Earth's magnetic field.

Seeing All the Colors of the Plasma Wind

2-D velocity imaging helps fusion researchers understand the role of ion winds (aka flows) in the boundary of tokamak plasmas.

Renewable Solvents Derived From Lignin Lowers Waste in Biofuel Production

New class of solvents breaks down plant biomass into sugars for biofuels and bioproducts in a closed-loop biorefinery concept.

Scientists Studying Nuclear Spin Make a Surprising Discovery

The size of a nucleus appears to influence the direction of certain particles emitted from collisions with spinning protons.

Simulating Turbulent Bubbly Flows in Nuclear Reactors

With a better understanding of bubbly flows, researchers can improve the safety and operation of our nuclear reactors.

Solving a Magnesium Mystery in Rechargeable Battery Performance

Study reveals surprising, bad chemical reactivity in battery components previously considered compatible.

Changing the Surroundings Improves Catalysis

Water changes how cobalt-based molecule turns carbon dioxide into chemical feedstock.

How to Draw a Line Narrower Than a Cold Virus

Scientists use ion beams to write high-purity metal structures, enabling nanofabrication opportunities.

Powering Up With a Smart Window

Window material repeatedly switches from being see-through to blocking the heat and converting sunlight into electricity.


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