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Issue 13, 2021
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Molecular spin echoes; multiple magnetic coherences in molecule surface scattering experiments

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Abstract

In this paper we demonstrate that a molecular beam of hydrogen molecules can be magnetically manipulated to produce multiple coherences in the molecular interference pattern. Unlike spin 1/2 magnetic beam experiments, i.e., neutron and helium spin echo, the nuclear and rotational magnetic moments in a molecule are strongly coupled. We show experimentally and theoretically that this coupling leads to multiple magnetic field conditions under which the magnetic moment of molecules travelling with different speeds can be coherently refocussed. We also demonstrate that these multiple coherence signals are extremely sensitive to the scattering event, opening up new possibilities for measuring molecule–surface interactions.

Graphical abstract: Molecular spin echoes; multiple magnetic coherences in molecule surface scattering experiments

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Article information


Submitted
14 Oct 2020
Accepted
02 Dec 2020
First published
08 Dec 2020

Phys. Chem. Chem. Phys., 2021,23, 7673-7681
Article type
Paper

Molecular spin echoes; multiple magnetic coherences in molecule surface scattering experiments

H. Chadwick, Y. Alkoby, J. T. Cantin, D. Lindebaum, O. Godsi, T. Maniv and G. Alexandrowicz, Phys. Chem. Chem. Phys., 2021, 23, 7673 DOI: 10.1039/D0CP05399F

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