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Showing 1–16 of 16 results
Advanced filters: Author: Kosmas Prassides Clear advanced filters

  • The authors find that metallicity persists in Yb2CsC60, a single-hole multiorbital correlated p-electron system. They suggest that Hund’s exchange reduces the impact of correlations away from half-filling, similar to d-orbital solids.

    • Keisuke Matsui
    • Ryan A. Klein
    • Kosmas Prassides
    ResearchOpen Access
    Nature Communications
    Volume: 17, P: 1-12

  • A photo-reversible metal–semiconductor phase transition can be induced in a nanocrystalline transition-metal oxide at room temperature by short-wavelength light irradiation, holding promise for the development of new optical storage media.

    • Kosmas Prassides
    News & Views
    Nature Chemistry
    Volume: 2, P: 517-519

  • Electrostatic doping of the transparent insulator potassium tantalate with an electric double-layer transistor has allowed superconductivity to be observed in this material for the first time.

    • Kosmas Prassides
    News & Views
    Nature Nanotechnology
    Volume: 6, P: 400-401

  • By using an ionic liquid as a gate dielectric, superconductivity can be induced in an inorganic band insulator up to a temperature of 15 K by an electric field, opening new directions in superconductivity research.

    • Kosmas Prassides
    News & Views
    Nature Materials
    Volume: 9, P: 96-98

  • Superconductivity has been discovered in the materials that form when alkali metals react with a solid hydrocarbon. This is the first new class of organic, high-temperature superconductor in a decade.

    • Matthew J. Rosseinsky
    • Kosmas Prassides
    News & Views
    Nature
    Volume: 464, P: 39-41

  • C60-based solids are the archetypal molecular superconductors, reaching transition temperatures as high as 33 K. Now, Cs3C60 solids, having a transition temperature of 38 K, have been isolated. Both face-centred-cubic and body-centred-cubic phases were synthesized, and, uniquely among C60 solids, the superconducting phase was found to be body-centred cubic.

    • Alexey Y. Ganin
    • Yasuhiro Takabayashi
    • Kosmas Prassides
    Research
    Nature Materials
    Volume: 7, P: 367-371

  • Cooperative electronic properties that arise purely from carbon π-electrons can lead to unconventional superconductivity and quantum magnetism. New packing architectures have now been established in two caesium-intercalated polyaromatic hydrocarbons, CsPhenanthrene and Cs2Phenanthrene, both strongly correlated multi-orbital Mott insulators. The frustrated magnetic topology in CsPhenanthrene also renders it a spin-½ quantum spin liquid candidate.

    • Yasuhiro Takabayashi
    • Melita Menelaou
    • Kosmas Prassides
    Research
    Nature Chemistry
    Volume: 9, P: 635-643

  • Doped lanthanum manganite compounds exhibit a range of conducting, electronic and magnetic phases, and, in the case of the Ca-doped series, a phase transition from a ferromagnetic metal to an antiferromagnetic insulator occurs. Here, the authors use ultrahigh-resolution synchrotron X-ray diffraction to track the complex structural behavior of La1−xCaxMnO3 below the charge-ordering temperatures.

    • Michael Pissas
    • Dimosthenis Stamopoulos
    • Kosmas Prassides
    ResearchOpen Access
    Communications Physics
    Volume: 6, P: 1-10

  • Materials that can store and release heat on demand are of use for energy storage applications. Here, the authors discover a ceramic material that can reversibly store energy from heat, light or electricity and release this energy as heat through the application of pressure.

    • Hiroko Tokoro
    • Marie Yoshikiyo
    • Shin-ichi Ohkoshi
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-8

  • Superconductivity and magnetic order are well known in C60 compounds of the form A3C60 (where A = alkali metal). The spherical C60 molecular ions in these crystals are almost always arranged in a face-centred cubic (f.c.c.) packing, except in Cs3C60, where the known superconducting phase has a body-centred cubic (b.c.c) packing. Now the f.c.c. polymorph for Cs3C60 has been isolated; it too is superconducting, although its magnetic properties are very different to those of its b.c.c counterpart.

    • Alexey Y. Ganin
    • Yasuhiro Takabayashi
    • Kosmas Prassides
    Research
    Nature
    Volume: 466, P: 221-225