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A general method for controlling and resolving rotational orientation of molecules in molecule-surface collisions

Author

Listed:
  • Oded Godsi

    (Schulich Faculty of Chemistry, Technion—Israel Institute of Technology)

  • Gefen Corem

    (Schulich Faculty of Chemistry, Technion—Israel Institute of Technology)

  • Yosef Alkoby

    (Schulich Faculty of Chemistry, Technion—Israel Institute of Technology)

  • Joshua T. Cantin

    (University of British Columbia)

  • Roman V. Krems

    (University of British Columbia)

  • Mark F. Somers

    (Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University)

  • Jörg Meyer

    (Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University)

  • Geert-Jan Kroes

    (Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University)

  • Tsofar Maniv

    (Schulich Faculty of Chemistry, Technion—Israel Institute of Technology)

  • Gil Alexandrowicz

    (Schulich Faculty of Chemistry, Technion—Israel Institute of Technology)

Abstract

The outcome of molecule–surface collisions can be modified by pre-aligning the molecule; however, experiments accomplishing this are rare because of the difficulty of preparing molecules in aligned quantum states. Here we present a general solution to this problem based on magnetic manipulation of the rotational magnetic moment of the incident molecule. We apply the technique to the scattering of H2 from flat and stepped copper surfaces. We demonstrate control of the molecule’s initial quantum state, allowing a direct comparison of differences in the stereodynamic scattering from the two surfaces. Our results show that a stepped surface exhibits a much larger dependence of the corrugation of the interaction on the alignment of the molecule than the low-index surface. We also demonstrate an extension of the technique that transforms the set-up into an interferometer, which is sensitive to molecular quantum states both before and after the scattering event.

Suggested Citation

  • Oded Godsi & Gefen Corem & Yosef Alkoby & Joshua T. Cantin & Roman V. Krems & Mark F. Somers & Jörg Meyer & Geert-Jan Kroes & Tsofar Maniv & Gil Alexandrowicz, 2017. "A general method for controlling and resolving rotational orientation of molecules in molecule-surface collisions," Nature Communications, Nature, vol. 8(1), pages 1-7, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15357
    DOI: 10.1038/ncomms15357
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    Cited by:

    1. Morgan Lowe & Yosef Alkoby & Helen Chadwick & Gil Alexandrowicz, 2024. "Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Helen Chadwick & Mark F. Somers & Aisling C. Stewart & Yosef Alkoby & Thomas J. D. Carter & Dagmar Butkovicova & Gil Alexandrowicz, 2022. "Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

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