Berkeley Lab

ALS

The Advanced Light Source is a Department of Energy-funded synchrotron facility that provides users from around the world access to the brightest beams of soft x-rays, together with hard x-rays and infrared, for scientific research and technology development in a wide range of disciplines.

A Multifunctional Material with Electric-Field Control

Three distinct crystalline phases with different electronic, magnetic, and optical properties were reversibly induced in a material through the insertion and extraction of ions by an electric field at room temperature. Such multifunctional materials are desirable for many applications, from smart windows to spintronics. ... Read more »

ALS Gives Intel a Closer Look at Microelectronic Packages

Intel, the world’s largest semiconductor chip maker, has been using the tomography capabilities at ALS Beamline 8.3.2 to image their microelectronic packages in 3D at high resolution with short throughput time, providing valuable information for both failure analysis and product development and proving to the industry as a whole that synchrotrons are an insightful tool for this type of imaging. ... Read more »

Fine-Tuning Oxygen Vacancies with Coherent Strain

Researchers have demonstrated a novel way to systematically strain-engineer oxygen vacancies in complex transition-metal oxide thin films. The work advances our ability to tailor such defects, small changes in which can lead to dramatic changes in material properties such as conductivity and magnetism. ... Read more »

Gregory Su, Physicist Postdoctoral Fellow

Gregory Su is a postdoctoral fellow studying connections between chemistry, structure, and function in soft materials by combining experimental soft x-ray spectroscopy and scattering with ab initio calculations. Su has been at the ALS since March 2016 and works primarily with the scattering group at Beamline 11.0.1.2, the Resonant Soft X-Ray Scattering (RSoXS) Beamline. ... Read more »

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Recent High-Impact Publications

W. Li, Y. Zhang, P. Deng, Z. Xu, S.-K. Mo, M. Yi, H. Ding, M. Hashimoto, R.G. Moore, D.-H. Lu, X. Chen, Z.-X. Shen, and Q.-K. Xue, “Stripes developed at the strong limit of nematicity in FeSe film,” Nat. Phys., doi:10.1038/nphys4186 (July 17, 2017).

M. Lolicato, C. Arrigoni, T. Mori, Y. Sekioka, C. Bryant, K.A. Clark, and D.L. Minor, “K2P2.1 (TREK-1)–activator complexes reveal a cryptic selectivity filter binding site,” Nature, doi:10.1038/nature22988 (July 10, 2017).

S. Emori, B.A. Gray, H.-M. Jeon, J. Peoples, M. Schmitt, K. Mahalingam, M. Hill, M.E. McConney, M.T. Gray, U.S. Alaan, A.C. Bornstein, P. Shafer, A.T. N’Diaye, E. Arenholz, G. Haugstad, K.-Y. Meng, F. Yang, D. Li, S. Mahat, D.G. Cahill, P. Dhagat, A. Jander, N.X. Sun, Y. Suzuki, and B.M. Howe, “Coexistence of Low Damping and Strong Magnetoelastic Coupling in Epitaxial Spinel Ferrite Thin Films,” Adv. Mater., doi:10.1002/adma.201701130 (July 10, 2017).

R.L. Siegelman, T.M. McDonald, M.I. Gonzalez, J. Martell, P.J. Milner, J.A. Mason, A.H. Berger, A.S. Bhown, and J.R. Long, “Controlling Cooperative CO2 Adsorption in Diamine-Appended Mg2(dobpdc) Metal–Organic Frameworks,” J. Am. Chem. Soc., doi:10.1021/jacs.7b05858 (July 2, 2017).

M. Sutter, B. Greber, C. Aussignargues, and C.A. Kerfeld, “Assembly principles and structure of a 6.5-MDa bacterial microcompartment shell,” Science 356, 1293, doi:10.1126/science.aan3289 (June 23, 2017).

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