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  Control of quantum magnets by atomic exchange bias

Yan, S., Choi, D., Burgess, J., Rolf-Pissarczyk, S., & Loth, S. (2015). Control of quantum magnets by atomic exchange bias. Nature Nanotechnology, 10(1), 40-45. doi:10.1038/nnano.2014.281.

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https://dx.doi.org/10.1038/nnano.2014.281 (Verlagsversion)
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 Urheber:
Yan, S.1, 2, Autor           
Choi, D.J.1, 2, Autor           
Burgess, J.A.J1, 2, Autor           
Rolf-Pissarczyk, Steffen1, 2, 3, Autor           
Loth, S.1, 2, Autor           
Affiliations:
1Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938290              
2Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany, ou_persistent22              
3International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266714              

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Schlagwörter: Nanoscience; technology
 Zusammenfassung: Mixing of discretized states in quantum magnets has a radical impact on their properties. Managing this effect is key for spintronics in the quantum limit. Magnetic fields can modify state mixing and, for example, mitigate destabilizing effects in single-molecule magnets. The exchange bias field has been proposed as a mechanism for localized control of individual nanomagnets. Here, we demonstrate that exchange coupling with the magnetic tip of a scanning tunnelling microscope provides continuous tuning of spin state mixing in an individual nanomagnet. By directly measuring spin relaxation time with electronic pump–probe spectroscopy, we find that the exchange interaction acts analogously to a local magnetic field that can be applied to a specific atom. It can be tuned in strength by up to several tesla and cancel external magnetic fields, thereby demonstrating the feasibility of complete control over individual quantum magnets with atomically localized exchange coupling.

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Sprache(n): eng - English
 Datum: 2014-07-292014-10-312014-12-152015-01
 Publikationsstatus: Erschienen
 Seiten: 6
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1038/nnano.2014.281
 Art des Abschluß: -

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Titel: Nature Nanotechnology
  Andere : Nat. Nanotechnol.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: London : Nature Publishing Group
Seiten: - Band / Heft: 10 (1) Artikelnummer: - Start- / Endseite: 40 - 45 Identifikator: ISSN: 1748-3387
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000239770