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.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Godsi O,Corem G,Alkoby Y,Cantin JT,Krems RV,Somers MF,Meyer J,Kroes GJ,Maniv T,Alexandrowicz Gdoi
10.1038/ncomms15357subject
Has Abstractpub_date
2017-05-08 00:00:00pages
15357issn
2041-1723pii
ncomms15357journal_volume
8pub_type
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