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Showing 1–6 of 6 results
Advanced filters: Author: Aleksandr I. Chumakov Clear advanced filters

  • Multiphoton superradiance is observed in a nuclear system excited by an X-ray free-electron laser. Tracking the system decay photon by photon shows strong enhancement of the first photon’s decay rate, in good agreement with Dicke’s formulation.

    • Aleksandr I. Chumakov
    • Alfred Q. R. Baron
    • Tetsuya Ishikawa
    Research
    Nature Physics
    Volume: 14, P: 261-264

  • The lowermost mantle and transition zone are increasingly oxidized at depth, according to analyses of the oxidation state of iron in majoritic garnet inclusions from deep diamonds.

    • Ekaterina S. Kiseeva
    • Denis M. Vasiukov
    • Leonid Dubrovinsky
    Research
    Nature Geoscience
    Volume: 11, P: 144-147

  • Deposition of single molecule magnets onto surfaces is a key step for integration in devices exploiting their magnetic bistability and quantum properties. Here, Sessoli and colleagues exploit synchrotron Mössbauer spectroscopy to assess the effects of molecule-surface interactions on the magnetic properties of Fe(III) SMMs.

    • Alberto Cini
    • Matteo Mannini
    • Roberta Sessoli
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9

  • The charge order transition of commonly known magnetite has only recently been unraveled. Here, the measurement of the low-temperature high-pressure phase diagram of a related material (Fe4O5) elucidates the interplay of average oxidation state and charge-ordering phenomena in the iron oxide family.

    • Sergey V. Ovsyannikov
    • Maxim Bykov
    • Leonid S. Dubrovinsky
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-11

  • This work concerns a systematic study of Fe1-xO employing complementary methods of powder and single-crystal X-ray diffraction and synchrotron Mössbauer source spectroscopy up to 94 GPa and 1700 K. It presents a structural and magnetic transitional pressure-temperature diagram of Fe1-xO and demonstrates the complex physicochemical properties of simple Fe1-xO binary oxide under extreme conditions.

    • Xiang Li
    • Elena Bykova
    • Ilya Kupenko
    ResearchOpen Access
    Communications Physics
    Volume: 7, P: 1-11