Field-induced double spin spiral in a frustrated chiral magnet
Magnetic ground states with peculiar spin textures, such as magnetic skyrmions and multifunctional domains are of enormous interest for the fundamental physics governing their origin as well as potential applications in emerging technologies. Of particular interest are multiferroics, where sophisticated interactions between electric and magnetic phenomena can be used to tailor several functionalities.
The multi-layered physics of layered superconductors
Muon spin rotation experiments provide unique microscopic insight into the superconductivity and magnetism of transition metal dichalcogenides — and reveal complex and unconventional patterns, hinting towards a common mechanism for and electronic origin of ‘unconventional’ superconductivity.
SLS 2.0: l’upgrade de la Source de Lumière Suisse SLS
Au cours des prochaines années, la Source de Lumière Suisse SLS fera l’objet d’un upgrade: la SLS 2.0. Cette transformation rendue possible par de la technologie dernier cri donnera une grande installation de recherche à la hauteur des besoins des chercheurs pour les prochaines décennies.
Spectroscopic disentanglement of the quantum states of highly excited dicopper molecules
Transition metals, characterized by their partially filled d-orbitals, provide the basis for many of the most relevant processes in chemistry, biology, and physics. Embedded as single atoms or in small clusters, they give rise to exceptional optical, chemical, and magnetic properties. So far, it has proven impossible to disentangle the complex network of excited quantum states, which greatly hinders predicting and controlling of material properties. We employed double-resonant four-wave mixing spectroscopy to quantitatively resolve the bright and perturbing dark quantum states of the neutral copper dimer.
Animal embryos evolved before animals
Detailed characterization of cellular structure and development of exceptionally preserved ancient tiny fossils from South China by synchrotron based X-ray tomographic microscopy at TOMCAT led an international team of researchers from the University of Bristol and Nanjing Institute of Geology and Palaeontology to the discovery that animal-like embryos evolved long before the first animals appear in the fossil record.
Christian Rüegg, nouveau directeur de l'Institut Paul Scherrer
Le 27 novembre 2019, sur proposition du Conseil des EPF, le Conseil fédéral a nommé Christian Rüegg à la tête de l’Institut Paul Scherrer PSI. Il succédera à Thierry Strässle, qui dirige l’établissement par intérim depuis le début de cette année. Christian Rüegg, qui est âgé de 43 ans, est actuellement chef de la division Recherche avec neutrons et muons au PSI. Il prendra ses nouvelles fonctions le 1er avril 2020.
Christian Rüegg appointed new Director of the Paul Scherrer Institute
On 27 November 2019, at the recommendation of the ETH Board, the Federal Council has appointed Christian Rüegg as the new director of the Paul Scherrer Institute PSI. The 43-year-old will take over from Thierry Strässle, who has headed the institute on an interim basis since the beginning of the year. Mr Rüegg is currently head of the Neutrons and Muons Division at the PSI. He will take up his new position on 1 April 2020.
Des médicaments qui rayonnent
A l’Institut Paul Scherrer PSI, on administre un traitement unique en Suisse à certains patients cancéreux. Bombarder les tumeurs de protons permet de les éliminer, et ce avec plus de précision qu’aucune autre forme d’irradiation.
Distortion mode anomalies in bulk PrNiO3: Illustrating the potential of symmetry-adapted distortion mode analysis for the study of phase transitions
The origin of the metal-to-insulator transition (MIT) in RNiO3 perovskites with R = trivalent 4f ion has challenged the condensed matter research community for almost three decades. A drawback for progress in this direction has been the lack of studies combining physical properties and accurate structural data covering the full nickelate phase diagram. Here we focus on a small region close to the itinerant limit (R = Pr, 1.5K < T < 300K), where we investigate the gap opening and the simultaneous emergence of charge order in PrNiO3.
Le besoin de radionucléides pour le traitement du cancer est important
Les radionucléides ouvrent de nouvelles perspectives en termes de thérapies très efficaces dans le domaine du cancer. Christian Rüegg, responsable de la division Recherche avec neutrons et muons à l’Institut Paul Scherrer PSI, explique le rôle que joue la source suisse de neutrons à spallation SINQ du PSI pour le développement de tels médicaments.
Un médicament anticancéreux issu de la source de neutrons du PSI
A la source de neutrons SINQ, des chercheurs du PSI produisent des radionucléides qui contribuent au développement de nouveaux traitements anticancéreux efficaces et ciblés. Ils collaborent étroitement avec les hôpitaux des environs.
Workshop on the Physics of Fundamental Symmetries and Interactions
The 5th Workshop on the Physics of Fundamental Symmetries and Interactions (PSI2019) took place from 20 to 25 October 2019 at PSI, bringing together 200 scientists from all over the world working on some of today’s most precise particle-physics experiments at the low-energy frontier.
Zukunftstag 2019
Am Donnerstag, 14. November haben 129 Kinder am Nationalen Zukunftstag des PSI teilgenommen. 57 Mädchen durften am Vormittag und 72 Jungs am Nachmittag 2 Stationen aus 12 Möglichen besuchen. Danke an alle engagierten Helferinnen und Helfer!
The X-ray Tomography Group welcomes Dr. Nazanin Samadi as Post Doc
Dr. Nazanin Samadi will help develop tools for comprehensive simulation of tomography beamline design and will contribute in the technical design report of the future TOMCAT 2.0 beamline upgrade. Before joining the group, she was a PhD student at the University of Saskatchewan in Canada.
Arbeiten mit einer Hörbehinderung
Im Leitfaden "Entwicklung und Anpassung von Diversity & Inclusion Richtlinien mit Fokus Hörbehinderung" wurde unser Automatiker-Lernende Andrin S. zu seinen Erfahrungen als Mitarbeitenden mit Hörbehinderung interviewt. Lesen Sie das interessante Interview auf Seite 14.
Pinning down the proximate Kitaev spin liquid
A study of the extended Kitaev model on the honeycomb lattice that factors in Kitaev, Heisenberg and off-diagonal symmetric interactions provides both a definitive answer on proximate Kitaev states and an essential guide to the physics of candidate Kitaev materials.
MaNEP Materials Discovery Workshop and Forum Meeting at the University of Bern
The MaNEP Network met at the University of Bern, Department of Chemistry and Biochemistry, for a Workshop on Materials Discovery and its annual Forum Meeting. The community discussed potential future joint initiatives and the role of MaNEP.
Giulia Stefenelli wins Swiss Aerosol Award 2019
Award conferred by SwissLung.org during the award ceremony in Berne, Switzerland
Radiographier rapidement et précisément des matériaux composites renforcés de fibres
Des chercheurs de l’Institut Paul Scherrer PSI ont mis au point une méthode de diffusion des rayons X aux petits angles qui peut être utilisée pour le développement ou le contrôle qualité de matériaux composites novateurs renforcés de fibres. Grâce à elle, les analyses de ces matériaux pourraient se faire à l’avenir non seulement par recours aux rayons X issus de sources puissantes comme la Source de Lumière Suisse SLS, mais aussi avec le rayonnement issu de tubes à rayons X conventionnels.
Dr. Anne Bonnin got tenured
Congratulations to Dr. Anne Bonnin for having been tenured. Anne spent 2 years of post-doc and 4 years as beamline scientist at TOMCAT.
Transmission measurement at the Bernina branch of the Aramis Beamline of SwissFEL
An international collaboration consisting of metrology and photon diagnostics groups Germany, the U.S.A., Switzerland, and Japan performed a set of cross-calibration measurements of optical properties on the Bernina branch of the Aramis beamline [1]. The collaboration saw the DESY-developed gas detector, a novel diamond detector from Brookhaven, and a room temperature radiometer from AIST in Japan placed at the Bernina end station and measure the absolute intensity of the FEL light as it passed through the optical elements. The cross-calibrated measurements used in conjuction with the photon beam intensity-gas (PBIG) monitor at the front end of the Aramis beamline to characterize the performance of the optical components on the Bernina branch and then compare them to the expected theoretical values. The measurements were performed at photon energies of 6.08 and about 7.22 keV.
Second Mu3e DAQ Week in Mainz
Data Acquisition experts from all subsystems got together in the Mu3e DAQ lab in Mainz to integrate hardware, firmware and software into a common system. For the first time, we ran the full Mu3e timing and reset system and in general made good progress towards common data taking at high rates.
Advances in artificial spin ice
Artificial spin ices consist of nanomagnets arranged on the sites of various periodic and aperiodic lattices. They have enabled the experimental investigation of a variety of fascinating phenomena such as frustration, emergent magnetic monopoles and phase transitions that have previously been the domain of bulk spin crystals and theory, as we discuss in this Review.
Magnetic-Field Control of Topological Electronic Response near Room Temperature in Correlated Kagome Magnets
Strongly correlated kagome magnets are promising candidates for achieving controllable topological devices owing to the rich interplay between inherent Dirac fermions and correlation-driven magnetism. Here we report tunable local magnetism and its intriguing control of topological electronic response near room temperature in the kagome magnet Fe3Sn2 using small angle neutron scattering, muon spin rotation, and magnetoresistivity measurement techniques.
Traditionelles Metzgetebüffet
Delikate Würste
Gesottenes und Geräuchertes
Diverse Beilagen
Park Innovaare: Groundbreaking Event
Today, PARK INNOVAARE steps into a new era. Accompanied by more than 200 guests including partners, shareholders, and key politicians, scientists and entrepreneurs, PARK INNOVAARE broke the ground to the construction of its new innovation campus. An investment of 155 CHF million by CPV/CAP Coop Pension Fund has brought this construction project to fruition
TME Workshop 2019 in La Plata, Argentina
From 22nd-24th October 2019, the international workshop “Topology in Magnetism: Theory Meets Experiments (TME) 2019” took place in La Plata, Argentina. Around 50 participants enjoyed three days of focused talks and discussions on a range of topics related to topology and magnetism, including magnetic skyrmions and vortices, synthetic nanomagnetism, anomalous transport, ferroelectric skyrmions and vortices, and computational materials theory.
Vers des microrobots intelligents
Il ressemble à un oiseau de papier en origami, cet art japonais du pliage, et exploite la force des champs magnétiques pour se mouvoir. De minuscules machines semblables à ce microrobot pourraient, entre autres, être utilisées en médecine lors d’interventions chirurgicales.
Nanomagnetic encoding of shape-morphing micromachines
Shape-morphing systems, which can perform complex tasks through morphological transformations, are of great interest for future applications in minimally invasive medicine, soft robotics, active metamaterials and smart surfaces. With current fabrication methods, shape-morphing configurations have been embedded into structural design by, for example, spatial distribution of heterogeneous materials, which cannot be altered once fabricated.
Hazard assessment of energy accidents
FRS researchers present a classification model for sorting energy accidents in the natural gas sector into hazard classes, according to their potential fatalities.