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Showing 1–6 of 6 results
Advanced filters: Author: Ilya Sergeev Clear advanced filters

  • While most biological and biomimetic mixed-valent [2Fe-2S]+ clusters exhibit a S = 1/2 ground spin state, substitutions with Se and Te significantly perturb the electronic structure and yield clear S = 3/2 spin state signatures. Here, the authors probe the vibrational dynamics of the Fe and Te centers using 57Fe and 125Te nuclear resonance vibrational spectroscopy and DFT calculations.

    • Aleksa Radović
    • Justin T. Henthorn
    • George E. Cutsail III
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-14

  • Resonant X-ray excitation of the  45Sc nuclear isomeric state was achieved by irradiation of a Sc-metal foil with 12.4-keV photon pulses from a state-of-the-art X-ray free-electron laser, allowing a high-precision determination of the transition energy.

    • Yuri Shvyd’ko
    • Ralf Röhlsberger
    • Tomasz Kolodziej
    ResearchOpen Access
    Nature
    Volume: 622, P: 471-475

  • The Na+-pumping KR2 rhodopsin from Krokinobacter eikastus is a light-driven non-proton cation pump whose mechanism of pumping remains to be understood. Here authors solved crystal structures of the O-intermediate state of the pentameric form of KR2 and its D116N and H30A mutants, which sheds light on the mechanism of non-proton cation light-driven pumping.

    • Kirill Kovalev
    • Roman Astashkin
    • Valentin Gordeliy
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-11

  • Topological insulators with ordered moments of embedded magnetic atoms are viable platforms for quantum electronics, but the practical applications are restricted by the size of their crystals. The authors synthesize a Z2 topological insulator GexMn1-xBi2Te4 in the form of a large crystal with high structural perfection and tunable magnetic and electronic properties.

    • Alexander S. Frolov
    • Dmitry Yu. Usachov
    • Lada V. Yashina
    ResearchOpen Access
    Communications Physics
    Volume: 7, P: 1-11