Using the new MAESTRO platform at the ALS, scientists found that the exotic behavior of electrons in the 2D semiconductor, WS2, may be highly tunable, with possible applications for electronics and other forms of information storage, processing, and transfer. Read more »
Ferromagnetism Emerges to Alleviate Polar Mismatch
A polar mismatch between nonferromagnetic materials drives an electronic reconstruction in which interfacial ferromagnetism is induced. The emergence of such functionality at interfaces could enable new types of electronics for a range of applications, including logic, memory, sensing, and more. Read more »
A New Way to Tune Emergent Magnetism
Perpendicular magnetic anisotropy (PMA)—where magnetic moments in a thin film preferentially point out of the plane of the film—is an emergent phenomenon of both fundamental and technological interest. A combination of x-ray techniques demonstrate how to tune PMA in transition-metal oxide multilayers. Read more » 
Revealing the Blue Phase and Other Twisted Orders
Resonant soft x-ray scattering revealed liquid crystal structures that cannot be probed using diffraction, including chiral liquid crystal systems such as the “blue phase” and the twist-bend nematic phase. Information on how individual molecules form functional structures in these systems is key to developing new applications. Read more »
Watching a Quantum Material Lose Its Stripes
In the world of microscopic physics, periodic stripe patterns can be formed by electrons within so-called quantum materials. Scientists have now disentangled the intriguing dynamics of how such atomic-scale stripes melt and form, providing fundamental insights that could be useful in the development of novel energy materials. Read more »
PepsiCo Explores Future Food Products at the ALS
Global food and beverage giant PepsiCo has been using ALS tomography beamline 8.3.2 to understand more about the chemical structure and behavior of their starch-based snack foods, with the goal of creating a whole new category of snacks that consumers cook at home in their own microwaves. Read more »
Researchers Confirm New 2D Topolgical Insulator
Researchers have established that a particularly stable form of WTe2 is a two-dimensional topological insulator, confirming recent predictions. The findings should provide new opportunities for fundamental studies of topological phenomena and for next-generation spintronic applications. Read more »
ALS Work Highlighted in DOE Top 40 Countdown
To celebrate DOE’s 40th anniversary (October 1, 2017), the Office of Science (SC) collected 40 scientific milestones from the previous 40 years, each one supported by SC. The ALS played a key role in two of the milestones: 2005 (ribosome) and 2009 (topological materials). Read more »
Electrical Switching of Magnetic Vortex Circulation
Photoemission electron microscopy (PEEM) experiments have demonstrated that the circulation direction of a magnetic vortex can be switched by the application of an electric field, opening the door to digital devices with more streamlined system designs, improved performance, and greater energy efficiency. Read more »
The Mystery of the Lightweight Electrons
Copper oxides are important for superconductivity applications but are difficult to understand due to complex charge, spin, and orbital interactions. Now, studies at the ALS have found such a system in which observations of effective electron mass are at odds with state-of-the-art electronic-structure calculations. Read more »
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