Results are first to suggest how to engineer even warmer superconductors with atom-by-atom control
A study at the Department of Energy’s SLAC National Accelerator Laboratory suggests for the first time how scientists might deliberately engineer superconductors that work at higher temperatures.
In their report, a team led by SLAC and Stanford University researchers explains why a thin layer of iron selenide superconducts — carries electricity with 100 percent efficiency — at much higher temperatures when placed atop another material, which is called STO for its main ingredients strontium, titanium and oxygen.
These findings, described today in the journal Nature, open a new chapter in the 30-year quest to develop superconductors that operate at room temperature, which could revolutionize society by making virtually everything that runs on electricity much more efficient. Although today’s high-temperature superconductors operate at much warmer temperatures than conventional superconductors do, they still work only when chilled to minus 135 degrees Celsius or below.
In the new study, the scientists concluded that natural trillion-times-per-second vibrations in the STO travel up into the iron selenide film in distinct packets, like volleys of water droplets shaken off by a wet dog. These vibrations give electrons the energy they need to pair up and superconduct at higher temperatures than they would on their own.
“Our simulations indicate that this approach – using natural vibrations in one material to boost superconductivity in another – could be used to raise the operating temperature of iron-based superconductors by at least 50 percent,” said Zhi-Xun Shen, a professor at SLAC and Stanford University and senior author of the study.
While that’s still nowhere close to room temperature, he added, “We now have the first example of a mechanism that could be used to engineer high-temperature superconductors with atom-by-atom control and make them better.”
Spying on Electrons
The study probed a happy combination of materials developed two years ago by scientists in China. They discovered that when a single layer of iron selenide film is placed atop STO, its maximum superconducting temperature shoots up from 8 degrees to nearly 77 degrees above absolute zero (minus 196 degrees Celsius).
While this was a huge and welcome leap, it would be hard to build on this advance without understanding what, exactly, was going on.
The Latest on: Superconductor
via Google News
The Latest on: Superconductor
- What Makes American Superconductor (AMSC) a New Strong Buy Stockon November 15, 2019 at 4:18 pm
American Superconductor (AMSC) could be a solid choice for investors given its recent upgrade to a Zacks Rank #1 (Strong Buy). This rating change essentially reflects an upward trend in earnings ...
- Scientists Uncover New State of Matter in Superconductoron November 15, 2019 at 7:28 am
The technique involves patterning a thin-film superconductor — in this case a high-temperature superconductor yttrium barium copper oxide — with arrays of tiny holes. When the material has a current ...
- Nematic fluctuations in the cuprate superconductor Bion November 15, 2019 at 2:22 am
Establishing the presence and the nature of a quantum critical point in their phase diagram is a central enigma of the high-temperature superconducting cuprates. It could explain their pseudogap and ...
- Global Superconductor Market 2019-2023 | Emergence of SMES Systems to Boost Growth | Technavioon November 14, 2019 at 4:03 pm
The global superconductor market is expected to post an incremental growth of USD 4.37 billion during the period 2019-2023, according to the latest market research report by Technavio. Request a free ...
- Hole-y Superconductor (image)on November 14, 2019 at 1:47 pm
Tiny holes punched into a high-temperature superconducting material revealed that Cooper pairs, electron duos that enable superconductivity, can also conduct electricity the way metals do. Disclaimer: ...
- Superconductor Technologies' (SCON) CEO Jeff Quiram on Q3 2019 Results - Earnings Call Transcripton November 14, 2019 at 12:23 pm
Superconductor Technologies Inc. (NASDAQ:SCON) Q3 2019 Earnings Conference Call November 12, 2019 11:00 AM ET Company Participants Moriah Shilton – LHA Jeff Quiram – President and Chief Executive ...
- Wind Turbines Are Getting Wildon November 13, 2019 at 9:53 am
A team of scientists from around Europe has tested a wind turbine that transmits energy using a superconductor. The team, named the EcoSwing Consortium, published its project in the journal ...
- Superconducting wind turbine chalks up first test successon November 12, 2019 at 8:11 am
They report their results in the IOP Publishing journal Superconductor Science and Technology. Corresponding author Anne Bergen, from the University of Twente, The Netherlands, said: "Wind turbine ...
- Superconductor Technologies EPS misses by $0.07, beats on revenueon November 12, 2019 at 3:40 am
Superconductor Technologies (NASDAQ:SCON): Q3 GAAP EPS of -$0.43 misses by $0.07. Revenue of $0.16M (-69.2% Y/Y) beats by $0.09M.
- Unveiling the vortex glass phase in the surface and volume of a type-II superconductoron November 12, 2019 at 2:10 am
Order-disorder transitions between glassy phases are common in nature and yet a comprehensive survey on the entailed structural changes is challenging since the constituents are in the micro-scale.
via Bing News