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ALS Work Using Spectroscopy

These techniques are used to study the energies of particles that are emitted or absorbed by samples that are exposed to the light-source beam and are commonly used to determine the characteristics of chemical bonding and electron motion.

 

Native American Interns Explore Engineering Opportunities at the Lab

This last summer, Berkeley Lab hosted three students from Navajo Technical University in a DOE-funded initiative that partners national labs with learning institutions whose populations are historically underrepresented in science. The goal is to increase enrollment of Native American students in Navajo Tech engineering programs. Read more »

Not All Gaps Are Created Equal

Researchers found that charge density waves (CDWs) in topological materials induce unconventional spectral gaps in the materials’ electronic structure. The finding that CDWs in topological materials can be essentially different from that in other materials should be carefully considered when designing quantum devices. Read more »

Lattice-Dependent Spin Textures in High-Tc Superconductors

Researchers found that in bismuth-based cuprate superconductors, charge imbalances caused by lattice distortions generate persistent and universal patterns of spin polarization. The results supply a previously missing but essential ingredient in efforts to understand the mechanisms driving the electronic behavior of high-temperature superconductors. Read more »PPT-icon-35 PDF-icon-35

Magnetization Switching in Highly Magnetostrictive Microstructures

Researchers learned how the size, shape, and orientation of microstructures affect how they switch magnetization directions in response to an applied voltage. The work advances our understanding of strain-responsive composite materials for use in energy-efficient electronic applications such as memory devices, sensors, and actuators. Read more »PPT-icon-35 PDF-icon-35

Studying Interfacial Effects in Solid-Electrolyte Batteries

An ambient-pressure probe of a solid electrolyte revealed how surface electrochemical mechanisms lead to poor electrolyte performance and battery failure. The results can help scientists engineer better coatings and interfaces, which are essential for building safer and better-performing batteries, particularly for use in vehicles. Read more »PPT-icon-35 PDF-icon-35

Manganese Cathodes Could Boost Lithium-ion Batteries

Rechargeable lithium-ion batteries are used in mobile devices, electric vehicles, and energy storage systems. But supplies of nickel and cobalt, commonly used in the cathodes of these batteries, are limited. New research opens up a potential low-cost, safe alternative in manganese, the fifth most abundant metal in the Earth’s crust. Read more »

A New Way to “Squeeze” Infrared Wavelengths Down to Size

Researchers demonstrated a new way to confine, or “squeeze,” infrared light by coupling photons with phonons (lattice vibrations) within a certain type of thin film. The work heralds a new class of optical materials for controlling infrared light, with potential applications in photonics, sensors, and microelectronic heat management. Read more »PPT-icon-35 PDF-icon-35

4f-Orbital Mixing Increases the Magnetic Susceptibility of Cp’3Eu

The ability to harness the 4f-orbital anisotropies and magnetic susceptibilities of lanthanide elements is key to their application in molecular magnetism, including as molecular qubits and single-molecule magnets. Here, 4f orbital mixing and its impact on the magnetic susceptibility of a trivalent Eu organometallic complex was analyzed experimentally. Read more »

Strategic ALS Projects Reach Key Milestones

Thanks to the hard work and dedication of multidisciplinary teams from groups across the ALS, a spate of important milestones occurred over the past month, for projects involving the new QERLIN beamline, the MERLIN beamline upgrade, and a new chamber for computer-chip metrology in Sector 12. Read more »