Exotic atoms and molecules articles within Nature Communications

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  • Article
    | Open Access

    In trilobite Rydberg molecules a ground state atom is coupled to a Rydberg (high-angular momentum) atom, and a potential well is formed in their potential energy curves. Here the authors report observation of vibrational series in pure trilobite rubidium Rydberg molecules created by three-photon photoassociation.

    • Max Althön
    • , Markus Exner
    •  & Herwig Ott

  • Article
    | Open Access

    Bose-Einstein condensate of excitons is expected in photo-excited bulk semiconductors, but a direct experimental evidence has been lacking. Here the authors report the observation of a condensate of 1s paraexcitons in Cu2O using real-space mid-infrared absorption imaging realized in a dilution refrigerator.

    • Yusuke Morita
    • , Kosuke Yoshioka
    •  & Makoto Kuwata-Gonokami

  • Article
    | Open Access

    The Kondo effect can serve as a powerful paradigm to understand strongly correlated many-body processes in physics. Here, Guo et al. utilize single molecule transistor devices as a testbed to study multi-level Kondo correlation and show electrical gate evolution and the universality of the two-stage Kondo effect.

    • Xiao Guo
    • , Qiuhao Zhu
    •  & Wenjie Liang

  • Article
    | Open Access

    Atomic clocks are based on the frequency of optical transitions and offer high precision. Here the authors demonstrate a configuration crossing in the highly charged ion praseodymium (Pr\({}^{9+}\)) and determine the frequency of a potential reference transition for a highly charged ion clock.

    • H. Bekker
    • , A. Borschevsky
    •  & J. C. Berengut

  • Article
    | Open Access

    Octupole deformation in nuclei is important to understand nuclear structure and electric dipole moments of heavy atoms. Here the authors measure energies of excited quantum states in radon isotopes and find that these isotopes do not provide favourable conditions in the search for CP-violation.

    • P. A. Butler
    • , L. P. Gaffney
    •  & M. Zielinska

  • Article
    | Open Access

    The nonlinear interaction between terahertz frequency electric fields and atoms or molecules can be used to study fundamental and technical problems. Here the authors demonstrate a THz–driven phase transition, with a potential application as a THz sensor, using Rydberg atomic states in a cesium vapor.

    • C. G. Wade
    • , M. Marcuzzi
    •  & K. J. Weatherill

  • Review Article
    | Open Access

    Rydberg molecules have been extensively studied both theoretically and experimentally. Here the authors review the recent developments in the study of various types of Rydberg molecules and their potential for future applications in spectroscopy, sensing and quantum information.

    • J. P. Shaffer
    • , S. T. Rittenhouse
    •  & H. R. Sadeghpour

  • Article
    | Open Access

    The intriguing behaviour of positronium scattering has its role in antimatter studies. Here the authors have predicted the quantum suppression of the cross-section for antihydrogen formation in positronium scattering with antiprotons, by including the excited states and using convergent close-coupling calculations.

    • A. S. Kadyrov
    • , I. Bray
    •  & I. I. Fabrikant

  • Article
    | Open Access

    Antihydrogen studies are important in testing the fundamental principles of physics but producing antihydrogen in large amounts is challenging. Here the authors demonstrate an efficient and high-precision method for trapping and stacking antihydrogen by using controlled plasma.

    • M. Ahmadi
    • , B. X. R. Alves
    •  & J. S. Wurtele

  • Article
    | Open Access

    Rydberg molecules have potential for ultracold chemistry applications in light of their unconventional binding mechanism that provides high tunability. Here the authors observe and control butterfly Rydberg molecules, which are bound by a shape resonance in the electron-perturber scattering.

    • Thomas Niederprüm
    • , Oliver Thomas
    •  & Herwig Ott

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