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Showing 1–9 of 9 results
Advanced filters: Author: F. Libisch Clear advanced filters

  • Quantum point contacts are narrow electrical connections of a width comparable to the wavelength of the conducting electrons. Here, the authors create such contacts in graphene by etching constrictions and use them to identify ballistic transport and quantized conductance of size-confined Dirac fermions.

    • B. Terrés
    • L. A. Chizhova
    • C. Stampfer
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • Understanding and controlling the transport of light through random media is important for many applications. Here, Peña et al. demonstrate how in the deeply localized regime transport is mediated by a single transmission channel composed of a localized internal mode or a necklace state.

    • A. Peña
    • A. Girschik
    • A. A. Chabanov
    ResearchOpen Access
    Nature Communications
    Volume: 5, P: 1-8

  • Graphene has so far demonstrated remarkable properties, making it increasingly interesting for ultrafast electronic applications. Here, the authors show that, when probed by a highly charged ion, freestanding graphene is able to provide dozens of electrons for ion neutralization within a few femtoseconds.

    • Elisabeth Gruber
    • Richard A. Wilhelm
    • Friedrich Aumayr
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • Though strong-field induced carrier excitation allows for exploring ultrafast electronic properties of a material, characterizing post-excitation dynamics is a challenge. Here, the authors report linear petahertz photoconductive sampling in a solid and use it to real-time probe conduction band electron motion.

    • M. Ossiander
    • K. Golyari
    • M. Schultze
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8

  • A two-mode waveguide is designed to realize a dynamical encircling of an exceptional point at which two resonances coincide in their frequency and their rate of decay; as a result the waveguide transmits only into a unique mode at either one of its two output ports.

    • Jörg Doppler
    • Alexei A. Mailybaev
    • Stefan Rotter
    Research
    Nature
    Volume: 537, P: 76-79

  • The absolute timing of the photoelectric effect has proved difficult to measure, but the delay between photon arrival at a tungsten surface and ejection of photoelectrons has now been determined.

    • M. Ossiander
    • J. Riemensberger
    • R. Kienberger
    Research
    Nature
    Volume: 561, P: 374-377

  • The transition energy of the first excited state of 229Th to the ground state is determined through the measurement of internal conversion electrons to correspond to a wavelength of 149.7 ± 3.1 nanometres.

    • Benedict Seiferle
    • Lars von der Wense
    • Peter G. Thirolf
    Research
    Nature
    Volume: 573, P: 243-246