Thomas A. Jung has been elected as a delegate of the Associate Members of the European Physical Society. As a member he shall contribute to the reviewing of the activities of the Society, the annual accounts and to the discussion of future priorities and new activities.
New SCCER Mobility white paper on "Pathways to a net zero CO2 Swiss mobility system" is now online!
Employing time-resolved STXM imaging, researchers investigated the emission of spin waves from a magnetic vortex core. By applying static magnetic fields, the control of both the shape of the vortex core and of the spatial profile of the emitted spin waves could be demonstrated, allowing for the fabrication of field-tunable spin wave focusing elements.
The authors find that an annealing process can create a highly ordered network of two-dimensional line defects at the buried interface between a relaxed film and its substrate. The low dimensional network spacing is directly related to the lattice mismatch and can correspondingly be tuned by the choice of substrate.
High-Resolution XRF imaging yields insights into the dyeing procedure of the world’s oldest pile carpet
High-resolution XRF imaging of the specific metal distribution within wool fibers at the PHOENIX beamline gives insights into traditional oriental dyeing procedures. Within the current project we have compared fibers from the historic Pazyryk carpet (~ 400 B.C.) with recently dyed wool and found evidence for the application of a sophisticated dyeing process based on fermentation. The Pazyryk carpet is the oldest known pile carpet in the world and belongs to the Central Asia exhibition of the The State Hermitage Museum, St. Petersburg.
Strontium ruthenate (Sr2RuO4) continues to present an important test of our understanding of unconventional superconductivity, because while its normal-state electronic structure is known with precision, its superconductivity remains unexplained. There is evidence that its order parameter is chiral, but reconciling this with recent observations of the spin part of the pairing requires an order parameter that is either finely tuned or implies a new form of pairing. Therefore, a definitive resolution of whether the superconductivity of Sr2RuO4 is chiral is important for the study of superconductivity.
Single particle studies play an important role in understanding their physical and chemical properties. Electrostatic trapping is on one such robust method that allows for a contact-free high-throughput single nanoparticle trapping in an aqueous environment in a nanofluidic device. However, finding an optimum design solution for stiffer single particle trapping for different particles is a cumbersome process. This work presents all crucial geometrical parameters required to tune the trapping efficiency of the device, and their impact. Furthermore, the work enables to quickly identify and optimize nanofluidic devices design for stronger single particle confinement using numerical simulations, saving the massive experimental time required for device optimization.
A world without batteries? Unimaginable! They transform our electronic devices into wireless and portable objects.
Light induced propagation strain pulse, converting nanoparticles of Ti3O5 from semiconducting to metallic phase.
The discovery of superconductivity in a d9−δ nickelate has inspired disparate theoretical perspectives regarding the essential physics of this class of materials. A key issue is the magnitude of the magnetic superexchange, which relates to whether cuprate-like high-temperature nickelate superconductivity could be realized. We address this question using Ni L-edge and O K-edge spectroscopy of the reduced d9−1/3 trilayer nickelates R4Ni3O8 (where R = La, Pr) and associated theoretical modeling.