Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Flashes of light on the superconductor: Using light to modulate the properties of a copper-based superconductor

Credits: www.audio-luci-store.it
Credits: www.audio-luci-store.it

Abstract:
A study just published in Nature Communications and carried out by a collaboration of several Italian and international centres, including SISSA, used a technique based on applying short flashes of light to observe and analyse the features of a superconductor at high critical temperature, a material with major prospects for technological applications. In addition to providing an explanation for the peculiar behaviour of the material, the study also opens to the possibility of controlling its characteristics by means of laser pulses.

Flashes of light on the superconductor: Using light to modulate the properties of a copper-based superconductor

Trieste, Italy | Posted on July 15th, 2014

uperconductors are futuristic materials that will hopefully have a broad range of technological applications at some time in the future (medical imaging, transport…). Today's use is limited by the extremely low temperatures (close to absolute zero) required for superconductivity to manifest. However, some families of these materials work at "relatively" high temperatures (about - 200° C), and it's on these that scientists are focusing their attention. Among them are copper-based superconductors, which have very unique characteristics. A study conducted by researchers of the International School for Advanced Studies (SISSA) of Trieste, the iLamp laboratory of the Catholic University of the Sacred Heart (Brescia), the T-Rex laboratory of the Elettra Synchrotron (Trieste), the Department of Physics of the University of Trieste and other international centres analysed a phenomenon typical of these materials and known to scientists as the pseudogap.

"When the material is heated to above the critical temperature, under which superconductivity manifests itself", explains Massimo Capone a SISSA researcher who took part in the study, "some of the features of the superconductive state are preserved, even though the main one is lost. This condition is called a pseudogap".

The team conducting the study induced a pseudogap state in the material, which it then subjected to very short pulses of laser light. "This treatment made the superconductor temporarily more ‘metallic', a state not normally manifested in this condition. We then interrupted the pulses and observed how the material behaved when it returned to its original state", continues Capone. "What we induced is in fact a transient state - lasting less than a picosecond - which we realised was related to electron-electron interactions. The light pulses remove these interactions, making the electrons freer to flow: hence the metallic state".

Capone, whose role in this (mainly experimental) study was to contribute to interpreting the data collected, explains that it's most probably the electron-electron interactions that are responsible for the pseudogap state.

"In addition to offering a theoretical framework for the phenomenon and providing new insight into this major family of superconductors, our study opens to an important possibility of controlling and modulating the characteristics of superconductors through the use of laser light".


Full bibliographic information

Photo-enhanced antinodal conductivity in the pseudogap state of high-Tc cuprates

F. Cilento, S. Dal Conte, G. Coslovich, S. Peli, N. Nembrini, S. Mor, F. Banfi, G. Ferrini, H. Eisaki, M. K. Chan, C. J. Dorow, M. J. Veit, M. Greven, D. van der Marel, R. Comin, A. Damascelli, L. Rettig, U. Bovensiepen, M. Capone, C. Giannetti et al.

Nature Communications 5, Article number: 4353 doi:10.1038/ncomms5353 Published 11 July 2014

####

For more information, please click here

Contacts:
Federica Sgorbissa

Copyright © AlphaGalileo

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

Ultrathin, flat lens resolves chirality and color: Multifunctional lens could replace bulky, expensive machines June 25th, 2016

Nanotechnology and math deliver two-in-one punch for cancer therapy resistance June 24th, 2016

Researchers discover new chemical sensing technique: Technique allows sharper detail -- and more information -- with near infrared light June 24th, 2016

Soft decoupling of organic molecules on metal June 23rd, 2016

Particle zoo in a quantum computer: First experimental quantum simulation of particle physics phenomena June 23rd, 2016

Superconductivity

Coexistence of superconductivity and charge density waves observed June 23rd, 2016

Titan shines light on high-temperature superconductor pathway: Simulation demonstrates how superconductivity arises in cuprates' pseudogap phase June 22nd, 2016

Marrying superconductors, lasers, and Bose-Einstein condensates: Chapman University Institute for Quantum Studies (IQS) member Yutaka Shikano, Ph.D., recently had research published in Scientific Reports June 20th, 2016

Physics

Particle zoo in a quantum computer: First experimental quantum simulation of particle physics phenomena June 23rd, 2016

Researchers refine method for detecting quantum entanglement June 18th, 2016

Discoveries

Ultrathin, flat lens resolves chirality and color: Multifunctional lens could replace bulky, expensive machines June 25th, 2016

Nanotechnology and math deliver two-in-one punch for cancer therapy resistance June 24th, 2016

Researchers discover new chemical sensing technique: Technique allows sharper detail -- and more information -- with near infrared light June 24th, 2016

Soft decoupling of organic molecules on metal June 23rd, 2016

Announcements

Ultrathin, flat lens resolves chirality and color: Multifunctional lens could replace bulky, expensive machines June 25th, 2016

Nanotechnology and math deliver two-in-one punch for cancer therapy resistance June 24th, 2016

Researchers discover new chemical sensing technique: Technique allows sharper detail -- and more information -- with near infrared light June 24th, 2016

Soft decoupling of organic molecules on metal June 23rd, 2016

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

Ultrathin, flat lens resolves chirality and color: Multifunctional lens could replace bulky, expensive machines June 25th, 2016

Nanotechnology and math deliver two-in-one punch for cancer therapy resistance June 24th, 2016

Researchers discover new chemical sensing technique: Technique allows sharper detail -- and more information -- with near infrared light June 24th, 2016

Soft decoupling of organic molecules on metal June 23rd, 2016

Photonics/Optics/Lasers

Marrying superconductors, lasers, and Bose-Einstein condensates: Chapman University Institute for Quantum Studies (IQS) member Yutaka Shikano, Ph.D., recently had research published in Scientific Reports June 20th, 2016

A new trick for controlling emission direction in microlasers June 20th, 2016

A new form of hybrid photodetectors with quantum dots and graphene June 19th, 2016

New approach to microlasers: Technique for 'phase locking' arrays of tiny lasers could lead to terahertz security scanners June 17th, 2016

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




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic