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  Atomic-scale sensing of the magnetic dipolar field from single atoms

Choi, T., Paul, W., Rolf-Pissarczyk, S., Macdonald, A. J., Natterer, F. D., Yang, K., et al. (2017). Atomic-scale sensing of the magnetic dipolar field from single atoms. Nature Nanotechnology, 12(5), 420-424. doi:10.1038/NNANO.2017.18.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-95B2-D Version Permalink: http://hdl.handle.net/21.11116/0000-0001-B4D0-8
Genre: Journal Article

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https://dx.doi.org/10.1038/NNANO.2017.18 (Publisher version)
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 Creators:
Choi, T.1, Author
Paul, W.1, Author
Rolf-Pissarczyk, S.2, 3, Author              
Macdonald, A. J.4, Author
Natterer, F. D.1, 5, Author
Yang, K.1, 6, Author
Willke, P.1, 7, Author
Lutz, C. P.1, Author
Heinrich, A. J.8, 9, Author
Affiliations:
1IBM Almaden Research Center, San Jose, ou_persistent22              
2Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938290              
3Max Planck Institute for Solid State Research, Stuttgart, ou_persistent22              
4University of British Columbia & Quantum Matter Institute, Vancouver, ou_persistent22              
5Institute of Physics, École Polytechnique Fédérale de Lausanne, ou_persistent22              
6School of Physical Sciences and Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, ou_persistent22              
7IV. Physical Institute, University of Göttingen, ou_persistent22              
8Center for Quantum Nanoscience, Institute for Basic Science (IBS), Seoul, ou_persistent22              
9Physics Department, Ewha Womans University, Seoul, ou_persistent22              

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 Abstract: Spin resonance provides the high-energy resolution needed to determine biological and material structures by sensing weak magnetic interactions1. In recent years, there have been notable achievements in detecting2 and coherently controlling3,4,5,6,7 individual atomic-scale spin centres for sensitive local magnetometry8,9,10. However, positioning the spin sensor and characterizing spin–spin interactions with sub-nanometre precision have remained outstanding challenges11,12. Here, we use individual Fe atoms as an electron spin resonance (ESR) sensor in a scanning tunnelling microscope to measure the magnetic field emanating from nearby spins with atomic-scale precision. On artificially built assemblies of magnetic atoms (Fe and Co) on a magnesium oxide surface, we measure that the interaction energy between the ESR sensor and an adatom shows an inverse-cube distance dependence (r−3.01±0.04). This demonstrates that the atoms are predominantly coupled by the magnetic dipole–dipole interaction, which, according to our observations, dominates for atom separations greater than 1 nm. This dipolar sensor can determine the magnetic moments of individual adatoms with high accuracy. The achieved atomic-scale spatial resolution in remote sensing of spins may ultimately allow the structural imaging of individual magnetic molecules, nanostructures and spin-labelled biomolecules.

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Language(s): eng - English
 Dates: 2016-08-052017-01-262017-03-062017-05
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1038/NNANO.2017.18
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Project name : The authors thank B. Melior for expert technical assistance and T. Greber for fruitful discussions. We gratefully acknowledge fi nancial support from the Of fi ce of Naval Research. W.P. thanks the Natural Sciences and Engineering Research Council of Canada (NSERC) for fellowship support. A.J.M. acknowledges fi nancial support from the NSERC CREATE and PGS D programmes. F.D.N. appreciates fi nancial support from the Swiss National Science Foundation (P300P2_158468 and PZ00P2_167965). K.Y. thanks the National Natural Science Foundation of China grant no. 61471337) for fi nancial support. P.W. and S.R. gratefully acknowledge fi nancial support from the German academic exchange service.
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Title: Nature Nanotechnology
  Other : Nat. Nanotechnol.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 (5) Sequence Number: - Start / End Page: 420 - 424 Identifier: ISSN: 1748-3387
CoNE: /journals/resource/1000000000239770