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Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding

Morgan Lowe, Yosef Alkoby, Helen Chadwick Orcid Logo, Gil Alexandrowicz Orcid Logo

Nature Communications, Volume: 15, Issue: 1

Swansea University Authors: Morgan Lowe, Yosef Alkoby, Helen Chadwick Orcid Logo, Gil Alexandrowicz Orcid Logo

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DOI (Published version): 10.1038/s41467-024-51175-2

Abstract

The emerging technique of neutral beam microscopy offers a non-perturbative way of imaging surfaces of various materials which cannot be studied using conventional microscopes. Current neutral beam microscopes use either diffractive focusing or pin-hole scanning to achieve spatial resolution, and ar...

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Published in: Nature Communications
ISSN: 2041-1723
Published: Springer Science and Business Media LLC 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa67445
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spelling v2 67445 2024-08-20 Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding 1e095c6d3237dbb4b4407c6679838084 Morgan Lowe Morgan Lowe true false 3ddda180e33166b4c459279027052f21 Yosef Alkoby Yosef Alkoby true false 8ff1942a68a875f00d473d51aa4947a1 0000-0003-4119-6903 Helen Chadwick Helen Chadwick true false 1401818466c1114ae2035b811568a38e 0000-0003-3203-5577 Gil Alexandrowicz Gil Alexandrowicz true false 2024-08-20 The emerging technique of neutral beam microscopy offers a non-perturbative way of imaging surfaces of various materials which cannot be studied using conventional microscopes. Current neutral beam microscopes use either diffractive focusing or pin-hole scanning to achieve spatial resolution, and are characterised by a strong dependence of the imaging time on the required resolution. In this work we introduce an alternative method for achieving spatial resolution with neutral atom beams which is based on manipulating the magnetic moments of the beam particles in a gradient field, and is characterised by a much weaker dependence of the imaging time on the image resolution. The validity of the imaging approach is demonstrated experimentally by reconstructing one dimensional profiles of the beam which are in good agreement with numerical simulation calculations. Numerical simulations are used to demonstrate the dependence of the signal to noise on the scan resolution and the topography of the sample, and assess the broadening effect due to the spread of velocities of the beam particles. The route towards implementing magnetic encoding in high resolution microscopes is discussed. Journal Article Nature Communications 15 1 Springer Science and Business Media LLC 2041-1723 15 8 2024 2024-08-15 10.1038/s41467-024-51175-2 COLLEGE NANME COLLEGE CODE Swansea University External research funder(s) paid the OA fee (includes OA grants disbursed by the Library) This work was funded by an ERC consolidator grant, Horizon 2020 Research and Innovation Programme grant 772228 (G.A.) and an EPSRC standard grant (EP/X037886/1) (G.A. and H.C.). G.A. is grateful to Prof. Aharon Blank and Prof. Marcel Utz for stimulating discussions. The authors are grateful to Mr. Paul Smith, Mr. Philip Hopkins and Mr. Kevin Morgan for their valuable technical support. 2024-09-20T10:48:05.3332000 2024-08-20T11:18:13.6285263 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Morgan Lowe 1 Yosef Alkoby 2 Helen Chadwick 0000-0003-4119-6903 3 Gil Alexandrowicz 0000-0003-3203-5577 4 67445__31405__20c1c680c8ff45f19e680b12f1d6ebaf.pdf 67445.VoR.pdf 2024-09-20T10:46:30.6298046 Output 2242605 application/pdf Version of Record true This article is licensed under a Creative Commons Attribution 4.0 International License. true eng http://creativecommons.org/licenses/by/4.0/
title Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding
spellingShingle Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding
Morgan Lowe
Yosef Alkoby
Helen Chadwick
Gil Alexandrowicz
title_short Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding
title_full Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding
title_fullStr Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding
title_full_unstemmed Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding
title_sort Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding
author_id_str_mv 1e095c6d3237dbb4b4407c6679838084
3ddda180e33166b4c459279027052f21
8ff1942a68a875f00d473d51aa4947a1
1401818466c1114ae2035b811568a38e
author_id_fullname_str_mv 1e095c6d3237dbb4b4407c6679838084_***_Morgan Lowe
3ddda180e33166b4c459279027052f21_***_Yosef Alkoby
8ff1942a68a875f00d473d51aa4947a1_***_Helen Chadwick
1401818466c1114ae2035b811568a38e_***_Gil Alexandrowicz
author Morgan Lowe
Yosef Alkoby
Helen Chadwick
Gil Alexandrowicz
author2 Morgan Lowe
Yosef Alkoby
Helen Chadwick
Gil Alexandrowicz
format Journal article
container_title Nature Communications
container_volume 15
container_issue 1
publishDate 2024
institution Swansea University
issn 2041-1723
doi_str_mv 10.1038/s41467-024-51175-2
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemistry{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemistry
document_store_str 1
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description The emerging technique of neutral beam microscopy offers a non-perturbative way of imaging surfaces of various materials which cannot be studied using conventional microscopes. Current neutral beam microscopes use either diffractive focusing or pin-hole scanning to achieve spatial resolution, and are characterised by a strong dependence of the imaging time on the required resolution. In this work we introduce an alternative method for achieving spatial resolution with neutral atom beams which is based on manipulating the magnetic moments of the beam particles in a gradient field, and is characterised by a much weaker dependence of the imaging time on the image resolution. The validity of the imaging approach is demonstrated experimentally by reconstructing one dimensional profiles of the beam which are in good agreement with numerical simulation calculations. Numerical simulations are used to demonstrate the dependence of the signal to noise on the scan resolution and the topography of the sample, and assess the broadening effect due to the spread of velocities of the beam particles. The route towards implementing magnetic encoding in high resolution microscopes is discussed.
published_date 2024-08-15T10:48:04Z
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