David LeBoeuf, LNCMI-Grenoble, and Cyril Proust, LNCMI-Toulouse Strange metals – which exhibit unusual properties such as a resistivity that scales linearly with temperature – challenge our understanding of charge transport in metals. A general and puzzling feature of a strange metal is a linear-in-temperature resistivity existing over a wide region [...]

Caitlin Duffy, Nigel Hussey, and Sven Badoux, HFML-FELIX Nijmegen. A team of researchers from HFML-FELIX has developed an experimental set-up capable of generating stable, intense current pulses in conjunction with high magnetic fields for studying the electronic ground state of various unconventional superconductors, whose upper critical fields are beyond the [...]

Stanislaw Galeski, HLD and HFML-FELIX. The ability to transport heat is one of the most fundamental properties of matter, crucial for engineering applications. In most materials, at room temperature transport is well understood. Things, however, are not as straightforward under extreme conditions such as temperatures close to absolute zero or [...]

Zhuo Yang and Yoshimitsu Kohama, ISSP at University of Tokyo, Japan, Duncan K. Maude, LNCMI-Toulouse, Christophe Marcenat, CEA, IRIG, and PHELIQS, Grenoble. In the mixed-valence compound YbB12, thermal-conductivity measurements at low temperatures reveal highly mobile excitations that carry heat like in a metal but do not conduct electricity. The Wiedemann-Franz [...]

Florian Le Mardelé and Milan Orlita, LNCMI-Grenoble. Alloying stands out as a pivotal technological method employed across various compounds, be they metallic, magnetic, or semiconducting, serving to fine-tune their properties to meet specific requirements. Ternary semiconductors represent a prominent example of such alloys. They allow fine-tuning of electronic bands – [...]

Raj Pandya, University of Warwick, UK, Chris Howard, University College London, UK, Peter Christianen, HFML-FELIX Nijmegen. For the first time, researchers have demonstrated that phosphorene nanoribbons – thin pieces of black phosphorus, only a few nanometers wide (figure 1, bottom) – exhibit both magnetic and semiconducting properties at room temperature. [...]

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 [...]