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
- American Superconductor: Fiscal 4Q Earnings Snapshoton June 2, 2020 at 2:10 pm
AYER, Mass. (AP) _ American Superconductor Corp. (AMSC) on Tuesday reported a loss of $5.9 million in its fiscal fourth quarter. The Ayer, Massachusetts-based company said it had a loss of 27 cents ...
- American Superconductor EPS beats by $0.01, beats on revenueon June 2, 2020 at 1:11 pm
GAAP EPS of -$0.27 beats by $0.01. Revenue of $18.14M (+24.3% Y/Y) beats by $0.25M. Shares +2.4%. Press Release ...
- American Superconductor (AMSC) Presents At Craig-Hallum Institutional Investor Conference - Slideshowon May 30, 2020 at 8:20 am
The following slide deck was published by American Superconductor Corporation in conjunction with this event. Download PDF 120 Click to enlarge Notes: ...
- A predicted superconductor might work at a record-breaking 200° Celsiuson May 29, 2020 at 1:07 pm
- AMSC American Superconductor (NASDAQ:AMSC) Downgraded by Zacks Investment Researchon May 27, 2020 at 8:01 pm
Moving Average Technical Analysis 5 day Moving Average is $$6.74 And 5 day price change is $1.39 (22.79%) with average volume for 5 day average is 267,261. While technical analysis for average 20 ...
- Earnings Preview: American Superconductor (AMSC) Q4 Earnings Expected to Declineon May 27, 2020 at 10:18 am
American Superconductor (AMSC) is expected to deliver a year-over-year decline in earnings on higher revenues when it reports results for the quarter ended March 2020. This widely-known consensus ...
- Counterintuitive Superconductivity and Quantum Computing Breakthrough: Using Pressure to Make Liquid Magnetismon May 23, 2020 at 9:06 pm
Using two flat-top diamonds and a lot of pressure, scientists have forced a magnetic crystal into a spin liquid state, which may lead to insights into high-temperature superconductivity and quantum ...
- Electrons break rotational symmetry in exotic low-temp superconductoron May 22, 2020 at 11:06 am
Scientists have discovered that the transport of electronic charge in a metallic superconductor containing strontium, ruthenium, and oxygen breaks the rotationa ...
- Australian quantum technology could become a $4 billion industry and create 16,000 jobson May 21, 2020 at 1:00 pm
A quantum technology boom is coming, and Australia must act to avoid missing out. A new CSIRO roadmap plots a course for this new industry.
- Accelerated Supercurrents Give Scientists Access To “Forbidden” Lighton May 20, 2020 at 10:26 am
In what is described as “a fundamental discovery of quantum matter,” a team of American researchers have accessed forbidden light emissions that could one ...
via Bing News