Toni Helm, HLD. Superhydrides are metallic hydride compounds that exhibit superconductivity (SC) under mega-bar pressure at extraordinarily high temperatures. The observation of superconducting critical temperatures, Tc, as high as 250 K has revived scientists' dream of room-temperature superconductivity. While current research has focused on pushing Tc even higher, room-temperature applications [...]

Jérôme Long, ICGM, Montpellier, France, Luís D. Carlos, University of Aveiro, Portugal, Paulina Plochocka, LNCMI Toulouse. Luminescence thermometry has gained significant attention as a versatile and non-invasive tool for remote temperature measurements in diverse fields, including nanomedicine, microelectronics, catalysis, and plasmonics. One of its perceived advantages is the presumed immunity [...]

Badih Assaf, University of Notre Dame, USA, Milan Orlita, LNCMI-Grenoble. Magnetic circular dichroism (MCD) is a widely known phenomenon with a long history in physics that dates back to the original experiments carried out by Faraday, dealing with the interaction of light with matter subjected to an externally applied magnetic [...]

Km Rubi, NHMFL, Los Alamos, USA, Walter Escoffier, LNCMI Toulouse, Uli Zeitler, HFML-FELIX Nijmegen. In the last two decades, two-dimensional electron systems (2DES) have been observed at the surfaces and interfaces of severalperovskite transition-metal oxides, so-called complex oxides. In particular, the widely studied 2DESs based on SrTiO3 (STO) and KTaO3 [...]

Sergei Zvyagin, HLD. The importance of attractive forces, stabilizing multi-particle bound states in condensed matter is generally accepted. By contrast, multiparticle bound states stabilized by means of repulsive forces were long thought to be only theoretical constructions, due to the strong dissipative channels present in real materials. Recently, Zhe Wang [...]

V. Oliviero, D. Vignolles, C. Proust, LNCMI Toulouse, W. A. Atkinson, Trent University, Canada. The ubiquity of the interplay between antiferromagnetic (AFM) order, charge density waves (CDWs), and superconductivity is a general feature of hole-doped cuprates. The role of AFM order is still strongly debated, although the pairing mechanism is [...]

J. F. Linnartz, A. Kool, S. Wiedmann, HFML Nijmegen and IMM Radboud. Quantum materials often exhibit remarkable sensitivity to subtle changes in their physical environment, a feature that can unlock new functionalities and drive innovative applications. One key phenomenon is magneto-elastoresistance, where the electrical resistance of a metal in a [...]

Cyrille Train and Matteo Atzori, LNCMI-Grenoble. Magnetic materials are widely used for many technologies in areas such as energy, health, transportation, computation, and data storage. For the latter, the readout of the magnetic state of a medium is crucial. Optical readout based on the magneto-optical Faraday effect was commercialized, but [...]

Alex Eaton, University of Cambridge, UK and Yurii Skourski, HLD. Scientists from the UK, USA, Czech Republic, and Germany have studied the Fermi surface of the heavy-fermion superconductor UTe2. This material is of particular interest given its high likelihood of hosting a spin-triplet Cooper-pairing mechanism. Evidence for this stems primarily [...]

Tristan Thebault, William Knafo, LNCMI Toulouse, Daniel Braithwaite, Gérard Lapertot, Georg Knebel, CEA-Grenoble, and Dai Aoki, Tohoku University. The interplay between magnetism and unconventional superconductivity in UTe2 was extensively studied in the past few years. Multiple superconducting phases were found to be induced near to a metamagnetic transition under magnetic [...]