Catalina Salazar Mejia, HLD. Magnetic-refrigeration and hydrogen-liquefaction technology based on the magnetocaloric effect are emerging as climate-friendly alternatives to conventional methods. To make these applications a reality, the proper characterization of the respective materials is now more crucial than ever. It is necessary to determine the magnetocaloric and other physical [...]

Walter Escoffier, Michel Goiran, Mathieu Pierre, LNCMI Toulouse, and Oleg Makarovsky, University of Nottingham, UK. Perovskite/graphene field effect transistors (FETs) have garnered substantial attention owing to their unique optical properties and potential for applications in electronics and optoelectronics, including ultra-sensitive photon detectors and FETs for metrology. The charge-transfer processes at [...]

Michał Grzybowski, Eindhoven University of Technology and University of Warsaw, and Uli Zeitler, HFML Nijmegen. Antiferromagnetic thin-film materials are robust against a magnetic field making them promising to be used in numerous spintronic applications. The magnetic properties of an antiferromagnet are governed by the competition between the magneto-crystalline anisotropy and [...]

Artem Mishchenko, University of Manchester, UK and Benjamin Piot, LNCMI Grenoble. Graphite is made out of a stacking of layers of carbon atoms arranged in a honeycomb lattice. This recurring pattern gets disrupted at the surfaces of the crystal which leads to the occurrence of “surface states” – fading waves [...]

Robert A. Jagt, Bartomeu Monserrat, Judith L. MacManus-Driscoll, Robert L. Z. Hoye, University of Cambridge, UK and Paulina Płochocka, LNCMI Toulouse. Modern advances in x-ray imaging have greatly improved the quality of medical care. The ability to detect low doses of x-rays is critical to the development of safe radiological [...]

Sergei Zherlitsyn, HLD Dresden. By investigating the Shastry-Sutherland compound SrCu2(BO3)2 up to the saturation magnetic field of 140 T and beyond, researchers from Japan, the Netherlands, and Switzerland together with scientists from the HLD have succeeded in identifying several spin-supersolid phases (SSPs) between the 1/2 magnetization plateau and saturation (1/1 [...]

Oleksandr Zheliuk, HFML Nijmegen. Scientists from the University of Groningen, together with colleagues from HFML Nijmegen, the University of Twente, and the Harbin Institute of Technology (China), have discovered the existence of a superconducting state that was first predicted in 2017. In particular, they present evidence for a special variant [...]

Hannes Kühne, HLD Dresden. Two-dimensional (2D) spin systems with an XY anisotropy are known to undergo a Berezinskii-Kosterlitz-Thouless (BKT) phase transition at a finite temperature TBKT, which marks the binding of topological defects in vortex-antivortex pairs. So far, experimental efforts to probe a genuine BKT transition in bulk materials were [...]

Ramakanta Chapai, J. F. Mitchell and Ulrich Welp, Argonne National Laboratory, Vincent Oliviero, Maxime Leroux, LNCMI Toulouse. The recently discovered-kagome lattice compounds AV3Sb5 (A = K, Rb, Cs) show a fascinating interplay of superconductivity, charge density wave (CDW) order, and nontrivial topology of the electronic band structure. The CDW order [...]

Matija Čulo, Institute of Physics, Zagreb, Croatia and Nigel Hussey, HFML and University of Bristol, UK. High-temperature superconductivity is one of the biggest unsolved problems in condensed-matter physics, due to its unconventional superconducting (SC) pairing mechanism, which goes beyond the standard electron-phonon interaction. Many materials with such an unconventional SC [...]