Physicists uncover new competing state of matter in superconducting material

January 3, 2019, Ames Laboratory
Ames Laboratory researchers used laser pulses of less than a trillionth of a second in much the same way as flash photography, in order to take a series of snapshots. Called terahertz spectroscopy, this technique can be thought of as "laser strobe photography" where many quick images reveal the subtle movement of electron pairings inside the materials using long wavelength far-infrared light. Credit: US Department of Energy, Ames Laboratory

A team of experimentalists at the U.S. Department of Energy's Ames Laboratory and theoreticians at University of Alabama Birmingham discovered a remarkably long-lived new state of matter in an iron pnictide superconductor, which reveals a laser-induced formation of collective behaviors that compete with superconductivity.

"Superconductivity is a strange state of matter, in which the pairing of electrons makes them move faster," said Jigang Wang, Ames Laboratory physicist and Iowa State University professor. "One of the big problems we are trying to solve is how different states in a material compete for those electrons, and how to balance competition and cooperation to increase temperature at which a superconducting state emerges."

To get a closer look, Wang and his team used of less than a trillionth of a second in much the same way as flash photography, in order to take a series of snapshots. Called , this technique can be thought of as "laser strobe photography" where many quick images reveal the subtle movement of electron pairings inside the materials using long wavelength far-infrared light.

"The ability to see these real time dynamics and fluctuations is a way to understanding them better, so that we can create better superconducting electronics and energy-efficient devices," said Wang.

Explore further: Ultra-fast laser spectroscopy lights way to understanding new materials

More information: X. Yang et al. Nonequilibrium Pair Breaking in Ba(Fe1−xCox)2As2 Superconductors: Evidence for Formation of a Photoinduced Excitonic State, Physical Review Letters (2018). DOI: 10.1103/PhysRevLett.121.267001

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V4Vendicar
1 / 5 (9) Jan 03, 2019
Government scientists like these commies are just playing around with money stolen from the American People.

Shut down NIST now!
granville583762
4.3 / 5 (9) Jan 03, 2019
Pure Scientific Research

"Nonequilibrium Pair Breaking in Ba(Fe1−xCox)2As2 Superconductors: Evidence for Formation of a Photoinduced Excitonic State
Ultrafast terahertz (THz) pump-probe spectroscopy reveals an unusual out-of-equilibrium Cooper pair nonlinear dynamics and a nonequilibrium state driven by femtosecond (fs) photoexcitation of superconductivity (SC) in iron pnictides"

Carrying out pure scientific research
is a commendable activity
which is beneficial to all
including the research establishments
carrying out the research

The Key point here
is
Tax Payers Money
when research which benefits all
is sponsored by us, the humble tax payer
we, the humble tax payer, are sponsoring this research
we are the sugar daddy
All this being so
why, when we have paid for this research
are we being asked to pay for
the write up concerning
This tax payer's sponsored research?
Nik_2213
5 / 5 (6) Jan 03, 2019
"Is this the Droid you're looking for ??"

https://arxiv.org...4987.pdf
granville583762
3.7 / 5 (3) Jan 03, 2019
Pure research is payment it's self
Nik_2213> "Is this the Droid you're looking for ??"

https://arxiv.org...4987.pdf

Thank, you Nik_2213

This dogged persistence in superconductivity
in the infinitum of the atomic materials
no spectacular advance is ever going to be made
as this welcome PDF shows
a highly academic piece of work
is protection of this work
the breakthrough is when a brainstorming academic has a brain wave
as that brainwave is what requires protection so the research establishment benefits commercially
but
pure research now a days, is identical the world over, in a world of its own exclusive club
That if you do not all ready know the research being undertaken, you're not in the club
rrwillsj
5 / 5 (1) Jan 03, 2019
Those who screech the loudest about public funding?

Also bewail the demand to "restore" the US Constitution. Without ever actually reading it.

Or they would realize the American Taxpayers have been funding practical & theoretical research since the very founding of this Nation.

It's in the Constitution, being a National Interest. Necessity expressed as a Civic Virtue!
holoman
not rated yet Jan 05, 2019
rrwillsj, thanks.

Those who screech the loudest about public funding?

Also bewail the demand to "restore" the US Constitution. Without ever actually reading it.

Or they would realize the American Taxpayers have been funding practical & theoretical research since the very founding of this Nation.

It's in the Constitution, being a National Interest. Necessity expressed as a Civic Virtue!

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