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Scientific Highlights

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Datum
22 septembre 2023
BiFeO3 nanofish

Biffo the fish: BiFeO3 nanoplate wins the Magnetism Art Competition at JEMS 2023 in Madrid

Dr. Tim A. Butcher from the Microspectroscopy group was awarded the first prize in the "Art in Magnetism" competition of the JEMS 2023 conference with his contribution "Biffo", obtained from a ptychography image of a BiFeO3 nanoplate.

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4 septembre 2023
SLS

Thank You SLS

Our beamline scientists look back on 22 years of brilliant science made possible by the Swiss Light Source SLS.

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1 septembre 2023
Figure 1: Branching during the reaction mechanisms of the catalytic pyrolysis of guaiacol. The Bronsted acid site density is responsible, which reaction route is taken.

Unveiling the reaction mechanism shines light on the selectivity increase in catalytic processes

Increasing the selectivity of a chemical process through rational catalyst design is the Holy Grail of heterogeneous catalysis. Researchers at PSI and ETH Zürich showcase how revealing hidden steps in reaction pathways can steer processes towards preferred products, as demonstrated in a study focused on biomass valorization.

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29 août 2023
Sala et al

Field-tuned quantum renormalization of spin dynamics in the honeycomb lattice Heisenberg antiferromagnet YbCl3

The basis for our understanding of quantum magnetism has been the study of elegantly simple model systems. However, even for the antiferromagnetic honeycomb lattice with isotropic spin interactions – one of the simplest model systems – a detailed understanding of quantum effects is still lacking. Here, using inelastic neutron scattering measurements of the honeycomb lattice material YbCl3, we elucidate how quantum effects renormalize ...

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24 août 2023
Crystal structure of the investigated cobalt-based oxides.

Improving the oxygen evolution reaction activity of Co-based oxides by phosphate functionalization

Our findings disclose that P-functionalization successfully enhances the oxygen evolution reaction (OER) activity of different cobalt-based catalysts (namely, La0.2Sr0.8CoO3–δ, La0.2Sr0.8Co0.8Fe0.2O3–δ, and CoOx) at near-neutral pHs and that both phosphate ion assistance in the OER mechanism and catalyst Co oxidation state can play a role in the enhanced OER activity.

 

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24 août 2023
(Image: Schofield / Constantinou)

Unveiling ultra-thin electron liquids in silicon

Soft X-rays enable scientists to visualise non-invasively the electronic properties of ultra-thin dopant layers buried within semiconductor wafers.

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21 août 2023
Flokstra et al

Spin-orbit driven superconducting proximity effects in Pt/Nb thin films

Manipulating the spin state of thin layers of superconducting material is a promising route to generate dissipationless spin currents in spintronic devices. Approaches typically focus on using thin ferromagnetic elements to perturb the spin state of the superconducting condensate to create spin-triplet correlations. We have investigated simple structures that generate spin-triplet correlations without using ferromagnetic elements.

 

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18 août 2023
Guguchia et al, npj QM

Unconventional charge order and superconductivity in kagome-lattice systems as seen by muon-spin rotation

Kagome lattices are intriguing and rich platforms for studying the intertwining of topology, electron correlation, and magnetism. These materials have been subject to tremendous experimental and theoretical studies not only due to their exciting physical properties but also as systems that may solve critical technological problems. We will review recent experimental progress on superconductivity and magnetic fingerprints of charge order in several kagome-lattice systems from the local-magnetic probe point of view by utilizing muon-spin rotation under extreme conditions, i.e., hydrostatic pressure, ultra low temperature and high magnetic field.

 

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17 août 2023
Han et al

Strong phonon softening and avoided crossing in aliovalence-doped heavy-band thermoelectrics

Aliovalent doping is a way to optimize the electrical properties of semiconductors, but its impact on the phonon structure and propagation is seldom considered properly. Here we show that aliovalent doping can be much more effective in reducing the lattice thermal conductivity of thermoelectric semiconductors than the commonly employed isoelectronic alloying strategy. We demonstrate ...

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16 août 2023
Photo of the tree-hole toad tree frog

On the trail of blue bones

The bones of the tree hollow toad tree frog are turquoise blue. Our team is currently investigating the nanostructure of the bone and its significance for the frog.

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PSI Scientific Reports

Archive 2006-2012. The Scientific Reports – containing accounts of research topics from all the different areas – provide an impression of the variety of subjects researched at PSI.

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