FacebookTwitterYouTube RSS Feed

News & Highlights

Research Highlights

Published: Tue, 06/20/2017 - 3:15pm

The Kapteyn-Murnane group has come up with a novel way to use fast bursts of extreme ultraviolet light to capture how strongly electrons interact with each other in materials. This research is important for figuring out how quickly materials can change their state from insulating to conducting, or from magnetic to nonmagnetic. In the future such fast switching may lead to faster and more efficient nanoelectronics.

In this work, graduate student Cong Chen, research associate Zhensheng Tao, and their colleagues used sequences of attosecond (10-18 s) bursts of extreme ultraviolet light to compare how long it took an electron to be emitted from the same energy levels, or bands, in two different metals––copper (Cu) and nickel (Ni).

In the past, scientists thought that the photoelectric effect, in which a high-energy photon kicks out an electron from a material, was instantaneous. More recently, with the advent of shorter and shorter laser pulses, scientists have been able to investigate such super-fast processes directly. And, they have discovered many surprises. In Chen’s and Tao’s work, the researchers...

Published: Nov 11, 2016

For a long time, there’s been a mystery concerning how tiny interactions between individual...

Published: Nov 08, 2016

Fellow Mitch Begelman’s new theory says it’s possible to form stars while a supermassive black...

Published: Oct 31, 2016

Far-red fluorescent light emitted from proteins could one day illuminate the inner workings of...

Published: Oct 27, 2016

Using frequency comb spectroscopy, the Ye group has directly observed transient intermediate...

Published: Sep 26, 2016

The Nesbitt group has invented a nifty technique for exploring the physics and chemistry of a...

Published: Sep 26, 2016

Exciting new theory from the Rey group reveals the profound effects of electron interactions on...

Published: Aug 11, 2016

Graduate student Greg Salvesen, JILA Collaborator Jake Simon (Southwest Research Institute), and...

Published: Jul 28, 2016

Physics education researchers from the University of Colorado Boulder and the University of...

Published: Jul 28, 2016

Newly minted Ph.D. Ming-Guang Hu and his colleagues in the Jin...

Published: Jul 27, 2016

Fellow Phil Armitage and group collaborator Jacob Simon of the Southwest Research Institute are...

Published: Jul 21, 2016

The Raschke group has created an ultrafast optical nanoscope based on a unique way of “nano”...

Published: Jul 20, 2016

Bob Peterson and his colleagues in the Lehnert-Regal lab recently set out to try something that...

Pages