Scientific Highlights
Switching Off the Surface Conductivity of Strontium Titanate by Non-Volatile Organic Adsorbates
Strontium titanate is a wide band gap semiconductor. Its surface can be rendered conductive by a mild annealing in vacuum. The present study reveals that by deposition of less than a monolayer of non-volatile organic molecules such as tetracyanoquinodimethane (TCNQ) this conductivity can be completely turned off. In view of the small size of TCNQ (ca. 1 nm) this could allow new pathways toward oxide-based electronics.
Mechanism For All-Optical Magnetization Switching
X-rays reveal a non-collinear magnetic state as the base for all-optical magnetization switching.
Mirror, mirror on the wall…
…. Now we know there are chiral phonons for sure
Discovery of a large unquenched orbital moment in a 2D van der Waals ferromagnet
3d transition metals often exhibit a quenched orbital moment when in a solid state system. Therefore, the proposition of a large unquenched orbital moment for V in VI3 caused some surprise and discussion in the scientific community. Experimental and theoretical works diverge on the fact of whether the orbital moment is quenched or not. In our work we have been able to give an answer this open issue, proposing also a model for the ground state of VI3.
Unusual ferrimagnetism in CaFe2O4
Rare ferrimagnet states in a phase competing antiferromagnet.
Blick in die magnetische Zukunft
PSI-Forschende beobachten erstmals spezifisches Verhalten von magnetischem Eis.
Exchange scaling of ultrafast angular momentum transfer in 4f antiferromagnets
A novel approach to controlling the speed of magnetic processes has been found through resonant magnetic scattering in an antiferromagnetic Lanthanide intermetallics.
Fingerprint of Copper in Peptides Linked to Alzheimer's Disease
In an interdisciplinary project, researchers from the Laboratory of Nanoscale Biology in BIO and the Laboratory for Condensed Matter in PSD have revealed the reaction between the nitrogen atoms of the amyloid-beta peptide and copper/zinc ions by using soft X-ray absorption spectroscopy.
Vastly Different Morphologies Dependent on the Growth Temperature
Lithium fluoride is an important material which is technologically exploited in spintronics and organic light emitting devices. It turns out that there is a vast difference between the morphologies of ultrathin lithium fluoride grown on the (100) facet of a silver single crystal. At room temperature dendrites are obtained while at elevated temperature lithium fluoride forms square islands. The system is an interesting model to study the crossover between diffusion limited aggregates and island growth.