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September 27th, 2022

µARPES & Electronic Alignment: Stay Focused, Save Time

Local variations in the band structure of WS2 on a variable number of graphene layers resolved with nanoARPES (DA30-L) | © Scienta Omicron

New material groups are often inhomogeneous consisting of small flakes or with domain structures on the µm scale. The same scale is relevant for microstructured devices. To extract meaningful high quality ARPES data from such samples requires high spatial resolution in the µm or even nm range. These small spot sizes introduce a new set of experimental challenges.

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August 29th, 2022

Spring-8 PEAK Upgrade: PEAK API for Analyser Integration with Control Systems

 Resonant HAXPES spectra of Yb 3d5/2 around the Yb L3 edge of YbInCu4  measured at 20 K | © Scienta Omicron

The first HAXPES beamline BL09XU at SPring-8 synchrotron in Japan has successfully completed upgrading the analysers to PEAK acquisition control software. PEAK offers an application programming interface (PEAK API) which is designed for full analyser integration into external control systems. These integrated control systems simplify conducting a whole range of experiments that require controlling external parameters.

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June 26th, 2022

Scientists Emulate Nature in Quantum Leap Towards Computers of the Future

The authors of the Nature paper in the Silicon Quantum Computing laboratory | © UNSW Sydney

A team of quantum computer physicists at UNSW Sydney (Silicon Quantum Computing Lab) led by Professor Michelle Simmons has achieved a major milestone in the race to build the world’s first quantum computer. They have built a quantum processor in silicon to simulate an organic molecule with astounding precision. They described in their recently published Nature paper, how they were able to mimic the structure and energy states of the organic compound polyacetylene – a repeating chain of carbon and hydrogen atoms distinguished by alternating single and double bonds of carbon. They utilize the atomic-precision placement accuracy of the scanning tunnelling microscope (STM) to engineer quantum dots with large on-site energies (U ≈ 25 meV) and uniform size to realize a homogeneous linear array for reliable simulation accuracy.

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June 7th, 2022

Study Uncovers How Structural Changes Affect the Superconducting Properties of a Metal Oxide

Research opens the door for further study of superconductivity and the creation of more efficient semiconductors. A team led by University of Minnesota Twin Cities researchers has discovered how subtle structural changes in strontium titanate, a metal oxide semiconductor, can alter the material’s electrical resistance. The research can help guide future experiments and materials design related to superconductivity and the creation of more efficient semiconductors for various electronic device applications.

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