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Showing 1–10 of 10 results
Advanced filters: Author: Urs Staub Clear advanced filters

  • The authors demonstrate the existence of chiral phonons in a non-chiral ferroelectric material, opening the possibility for phonon chirality control through ferroic switching of the electric polarization.

    • Hiroki Ueda
    • Abhishek Nag
    • Urs Staub
    ResearchOpen Access
    Nature Communications
    Volume: 17, P: 1-6

  • Our experimental proof of chiral phonons demonstrates a degree of freedom in condensed matter that is of fundamental importance and opens the door to exploration of emergent phenomena based on chiral bosons.

    • Hiroki Ueda
    • Mirian García-Fernández
    • Urs Staub
    ResearchOpen Access
    Nature
    Volume: 618, P: 946-950

  • Ultrashort laser pulses create strain waves that generate highly mobile charges at an oxide interface. These charges propagate into the oxide layer destroying its antiferromagnetic ordering and insulating properties, providing insight into the physics of metal–insulator transitions.

    • Valerio Scagnoli
    • Urs Staub
    News & Views
    Nature Materials
    Volume: 14, P: 859-860

  • Experimental approaches that can directly measure spin-lattice coupling are rare. Here, authors report direct observation of the coupling of the phonon and magnon dynamics of a coherently driven electromagnon in a multiferroic hexaferrite using time-resolved X-ray diffraction. (277 characters in total).

    • Hiroki Ueda
    • Roman Mankowsky
    • Urs Staub
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-7

  • Materials that combine magnetic order and charge localization are interesting for the prospect of realizing spontaneous polarization from magnetic and charge order. Here, YNiO3 is shown to have a spiral magnetic structure, with domains of spin-rotations consistent with an electric polarization, which can be reversed by an external electric field.

    • Nazaret Ortiz Hernández
    • Elizabeth Skoropata
    • Urs Staub
    ResearchOpen Access
    Communications Materials
    Volume: 5, P: 1-6

  • A four-wave mixing technique is developed in the hard X-ray range. A diamond phase grating in an X-ray beam path creates a periodic excitation pattern on a sample via the Talbot effect. The response of the periodic excitation is probed by an optical pulse.

    • Jérémy R. Rouxel
    • Danny Fainozzi
    • Cristian Svetina
    Research
    Nature Photonics
    Volume: 15, P: 499-503

  • Using hard X-rays for transient grating (TG) spectroscopy, fundamental excitations can be followed with femtosecond temporal and nanometer spatial resolution, selecting momenta, chemical elements and their chemical environment. The authors demonstrate the first experiment of all X-ray TG on an amorphous film of FeGd and on a silicon single crystal.

    • Eugenio Ferrari
    • Hiroki Ueda
    • Cristian Svetina
    ResearchOpen Access
    Communications Physics
    Volume: 8, P: 1-11