Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > Scientists break record for highest-temperature superconductor: Experiment produces new material that can conduct electricity perfectly

The data from the X-rays allowed scientists to build a model of the crystal structure of the material.

CREDIT
Courtesy of Drozdov et al.
The data from the X-rays allowed scientists to build a model of the crystal structure of the material. CREDIT Courtesy of Drozdov et al.

Abstract:
University of Chicago scientists are part of an international research team that has discovered superconductivity--the ability to conduct electricity perfectly--at the highest temperatures ever recorded.

Scientists break record for highest-temperature superconductor: Experiment produces new material that can conduct electricity perfectly

Chicago, IL | Posted on May 24th, 2019

Using advanced technology at UChicago-affiliated Argonne National Laboratory, the team studied a class of materials in which they observed superconductivity at temperatures of about minus-23 degrees Celsius (minus-9 degrees Fahrenheit)--a jump of about 50 degrees compared to the previous confirmed record.

Though the superconductivity happened under extremely high pressure, the result still represents a big step toward creating superconductivity at room temperature--the ultimate goal for scientists to be able to use this phenomenon for advanced technologies. The results were published May 23 in the journal Nature; Vitali Prakapenka, a research professor at the University of Chicago, and Eran Greenberg, a postdoctoral scholar at the University of Chicago, are co-authors of the research.

Just as a copper wire conducts electricity better than a rubber tube, certain kinds of materials are better at becoming superconductive, a state defined by two main properties: The material offers zero resistance to electrical current and cannot be penetrated by magnetic fields. The potential uses for this are as vast as they are exciting: electrical wires without diminishing currents, extremely fast supercomputers and efficient magnetic levitation trains.

But scientists have previously only been able to create superconducting materials when they are cooled to extremely cold temperatures--initially, minus-240 degrees Celsius and more recently about minus-73 degrees Celsius. Since such cooling is expensive, it has limited their applications in the world at large.

Recent theoretical predictions have shown that a new class of materials of superconducting hydrides could pave the way for higher-temperature superconductivity. Researchers at the Max Planck Institute for Chemistry in Germany teamed up with University of Chicago researchers to create one of these materials, called lanthanum superhydrides, test its superconductivity, and determine its structure and composition.

The only catch was that the material needed to be placed under extremely high pressure--between 150 and 170 gigapascals, more than one and a half million times the pressure at sea level. Only under these high-pressure conditions did the material--a tiny sample only a few microns across--exhibit superconductivity at the new record temperature.

In fact, the material showed three of the four characteristics needed to prove superconductivity: It dropped its electrical resistance, decreased its critical temperature under an external magnetic field and showed a temperature change when some elements were replaced with different isotopes. The fourth characteristic, called the Meissner effect, in which the material expels any magnetic field, was not detected. That's because the material is so small that this effect could not be observed, researchers said.

They used the Advanced Photon Source at Argonne National Laboratory, which provides ultra-bright, high-energy X-ray beams that have enabled breakthroughs in everything from better batteries to understanding the Earth's deep interior, to analyze the material. In the experiment, researchers within University of Chicago's Center for Advanced Radiation Sources squeezed a tiny sample of the material between two tiny diamonds to exert the pressure needed, then used the beamline's X-rays to probe its structure and composition.

Because the temperatures used to conduct the experiment is within the normal range of many places in the world, that makes the ultimate goal of room temperature--or at least 0 degrees Celsius--seem within reach.

The team is already continuing to collaborate to find new materials that can create superconductivity under more reasonable conditions.

"Our next goal is to reduce the pressure needed to synthesize samples, to bring the critical temperature closer to ambient, and perhaps even create samples that could be synthesized at high pressures, but still superconduct at normal pressures," Prakapenka said. "We are continuing to search for new and interesting compounds that will bring us new, and often unexpected, discoveries."

####

For more information, please click here

Contacts:
Mary Naset

773-834-4238

Copyright © University of Chicago

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

NUS researchers develop stretchable, self-healing and illuminating material for ‘invincible’ light-emitting devices: Promising applications include damage-proof flexible display screens and illuminating electronic skin for autonomous soft robots May 31st, 2020

The concept of creating «brain-on-chip» revealed: A team of scientists is working to create brain-like memristive systems providing the highest degree of adaptability for implementing compact and efficient neural interfaces, new-generation robotics, artificial intelligence, perso May 29th, 2020

SUTD developed a simple method to print planar microstructures of polysiloxane: The new method, embedded ink writing (EIW), enables direct writing of polysiloxane which helps in the fabrication of microfluidic devices, flexible wearables, and soft actuators May 29th, 2020

Researchers develop experimental rapid COVID-19 test using nanoparticle technique: Advanced nanotechnology provides 'naked eye' visual detection of virus in 10 minutes May 29th, 2020

Superconductivity

Scientists use light to accelerate supercurrents, access forbidden light, quantum world May 21st, 2020

Electrons break rotational symmetry in exotic low-temp superconductor: Scientists previously observed this peculiar behavior in other materials whose ability to conduct electricity without energy loss cannot be explained by standard theoretical frameworks May 19th, 2020

A novel Li-ion superconductor makes possible an era of safe battery: A fast Li-ion conducting solid electrolyte material comparable to the liquid electrolytes used in typical batteries. An innovative synthesis developed for a Li-ion superconductor without any compromise between p April 10th, 2020

New measurements reveal evidence of elusive particles in a newly-discovered superconductor: Material may be natural home to quasiparticle hiding for decades April 3rd, 2020

Govt.-Legislation/Regulation/Funding/Policy

Argonne researchers create active material out of microscopic spinning particles May 29th, 2020

Study finds electrical fields can throw a curveball: Particle-scale phenomenon akin to the swerving of a curveball could allow selective separation of suspended nanomaterials May 26th, 2020

Scientists use light to accelerate supercurrents, access forbidden light, quantum world May 21st, 2020

Electrons break rotational symmetry in exotic low-temp superconductor: Scientists previously observed this peculiar behavior in other materials whose ability to conduct electricity without energy loss cannot be explained by standard theoretical frameworks May 19th, 2020

Possible Futures

NUS researchers develop stretchable, self-healing and illuminating material for ‘invincible’ light-emitting devices: Promising applications include damage-proof flexible display screens and illuminating electronic skin for autonomous soft robots May 31st, 2020

Configurable circuit technology poised to expand silicon photonic applications: Chips can be programmed after fabrication for use in communication, computing or biomedical applications May 29th, 2020

The concept of creating «brain-on-chip» revealed: A team of scientists is working to create brain-like memristive systems providing the highest degree of adaptability for implementing compact and efficient neural interfaces, new-generation robotics, artificial intelligence, perso May 29th, 2020

SUTD developed a simple method to print planar microstructures of polysiloxane: The new method, embedded ink writing (EIW), enables direct writing of polysiloxane which helps in the fabrication of microfluidic devices, flexible wearables, and soft actuators May 29th, 2020

Discoveries

NUS researchers develop stretchable, self-healing and illuminating material for ‘invincible’ light-emitting devices: Promising applications include damage-proof flexible display screens and illuminating electronic skin for autonomous soft robots May 31st, 2020

Argonne researchers create active material out of microscopic spinning particles May 29th, 2020

Configurable circuit technology poised to expand silicon photonic applications: Chips can be programmed after fabrication for use in communication, computing or biomedical applications May 29th, 2020

SUTD developed a simple method to print planar microstructures of polysiloxane: The new method, embedded ink writing (EIW), enables direct writing of polysiloxane which helps in the fabrication of microfluidic devices, flexible wearables, and soft actuators May 29th, 2020

Announcements

NUS researchers develop stretchable, self-healing and illuminating material for ‘invincible’ light-emitting devices: Promising applications include damage-proof flexible display screens and illuminating electronic skin for autonomous soft robots May 31st, 2020

Configurable circuit technology poised to expand silicon photonic applications: Chips can be programmed after fabrication for use in communication, computing or biomedical applications May 29th, 2020

SUTD developed a simple method to print planar microstructures of polysiloxane: The new method, embedded ink writing (EIW), enables direct writing of polysiloxane which helps in the fabrication of microfluidic devices, flexible wearables, and soft actuators May 29th, 2020

Researchers develop experimental rapid COVID-19 test using nanoparticle technique: Advanced nanotechnology provides 'naked eye' visual detection of virus in 10 minutes May 29th, 2020

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Argonne researchers create active material out of microscopic spinning particles May 29th, 2020

Configurable circuit technology poised to expand silicon photonic applications: Chips can be programmed after fabrication for use in communication, computing or biomedical applications May 29th, 2020

The concept of creating «brain-on-chip» revealed: A team of scientists is working to create brain-like memristive systems providing the highest degree of adaptability for implementing compact and efficient neural interfaces, new-generation robotics, artificial intelligence, perso May 29th, 2020

SUTD developed a simple method to print planar microstructures of polysiloxane: The new method, embedded ink writing (EIW), enables direct writing of polysiloxane which helps in the fabrication of microfluidic devices, flexible wearables, and soft actuators May 29th, 2020

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project