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Magnetic resonance imaging of single atoms on a surface

Title
Magnetic resonance imaging of single atoms on a surface
Authors
Willke, PhilipYang, KaiBae, YujeongHeinrich, Andreas J.Lutz, Christopher P.
Ewha Authors
Andreas Heinrich
SCOPUS Author ID
Andreas Heinrichscopus
Issue Date
2019
Journal Title
NATURE PHYSICS
ISSN
1745-2473JCR Link

1745-2481JCR Link
Citation
NATURE PHYSICS vol. 15, no. 10, pp. 1005 - 1010
Publisher
NATURE PUBLISHING GROUP
Indexed
SCIE; SCOPUS WOS
Document Type
Article
Abstract
Magnetic resonance imaging (MRI) revolutionized diagnostic medicine and biomedical research by allowing non-invasive access to spin ensembles(1). To enhance MRI resolution to the nanometre scale, new approaches(2-4) including scanning probe methods(5-8) have been used in recent years, which culminated in the detection of individual spins(5,6). This allowed for the visualization of organic samples(9) and magnetic structures(10,11), as well as identifying the location of electron(7,8) and nuclear spins(12). Here, we demonstrate the MRI of individual atoms on a surface. The set-up, implemented in a cryogenic scanning tunnelling microscope, uses single-atom electron spin resonance(13,14) to achieve subangstrom resolution, exceeding the spatial resolution of previous MRI experiments(5-8) by one to two orders of magnitude. We find that MRI scans of different atomic species and with different probe tips lead to unique signatures in the resonance images. These signatures reveal the magnetic interactions between the tip and the atom, in particular magnetic dipolar and exchange interaction.
DOI
10.1038/s41567-019-0573-x
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자연과학대학 > 물리학전공 > Journal papers
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