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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: Aug 25, 2014

A Be star is a luminous, blue B-type star with distinctive spectral lines that can provide two...

Published: Aug 18, 2014

Symmetries described by SU(N) group theory made it possible for physicists in the 1950s to...

Published: Aug 01, 2014

The Raschke group recently came up with a clever way to detect folds and grain boundaries in...

Published: Jul 13, 2014

The spooky quantum property of entanglement is set to become a powerful tool in precision...

Published: Jun 26, 2014

Graduate student Adam Kaufman and his colleagues in the Regal and Rey groups have demonstrated a...

Published: Jun 22, 2014

The Ye group has not only made two invisible rulers of extreme ultraviolet (XUV) light, but also...

Published: Jun 13, 2014

Imagine a network of multiple clocks orbiting the Earth, not only reporting down to us, but also...

Published: May 27, 2014

Mid-infrared (mid-IR) laser light is accomplishing some remarkable things at JILA. This...

Published: May 22, 2014

Biomolecules may not always behave the same way in test tubes as they do in living cells, a fact...

Published: May 07, 2014

The Markus Raschke group has come up with an innovative way that may one day allow it to peer...

Published: Apr 23, 2014

Fellow Tom Perkins’ group is significantly closer to realizing its long-standing dream of using...

Published: Apr 17, 2014

Graduate student Erik Holmstrom and Fellow David Nesbitt have applied their laboratory research...

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