This title appears in the Scientific Report :
2015
Please use the identifier:
http://hdl.handle.net/2128/9350 in citations.
Please use the identifier: http://dx.doi.org/10.1038/ncomms9541 in citations.
Perpendicular reading of single confined magnetic skyrmions
Perpendicular reading of single confined magnetic skyrmions
Thin-film sub-5 nm magnetic skyrmions constitute an ultimate scaling alternative for future digital data storage. Skyrmions are robust noncollinear spin textures that can be moved and manipulated by small electrical currents. Here we show here a technique to detect isolated nanoskyrmions with a curr...
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Personal Name(s): | Crum, Dax (Corresponding author) |
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Bouhassoune, Mohammed / Bouaziz, Juba / Schweflinghaus, Benedikt / Blügel, Stefan / Lounis, Samir | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
Published in: | Nature Communications, 6 (2015) S. 8541 |
Imprint: |
London
Nature Publishing Group
2015
|
PubMed ID: |
26471957 |
DOI: |
10.1038/ncomms9541 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena Controlling Spin-Based Phenomena |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1038/ncomms9541 in citations.
Thin-film sub-5 nm magnetic skyrmions constitute an ultimate scaling alternative for future digital data storage. Skyrmions are robust noncollinear spin textures that can be moved and manipulated by small electrical currents. Here we show here a technique to detect isolated nanoskyrmions with a current perpendicular-to-plane geometry, which has immediate implications for device concepts. We explore the physics behind such a mechanism by studying the atomistic electronic structure of the magnetic quasiparticles. We investigate from first principles how the isolated skyrmion local-density-of-states which tunnels into the vacuum, when compared with the ferromagnetic background, is modified by the site-dependent spin mixing of electronic states with different relative canting angles. Local transport properties are sensitive to this effect, as we report an atomistic conductance anisotropy of up to ~20% for magnetic skyrmions in Pd/Fe/Ir(111) thin films. In single skyrmions, engineering this spin-mixing magnetoresistance could possibly be incorporated in future magnetic storage technologies. |