This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1038/s41598-017-03924-1 in citations.
Please use the identifier: http://hdl.handle.net/2128/14687 in citations.
Dynamical amplification of magnetoresistances and Hall currents up to the THz regime
Dynamical amplification of magnetoresistances and Hall currents up to the THz regime
Spin-orbit-related effects offer a highly promising route for reading and writing information in magnetic units of future devices. These phenomena rely not only on the static magnetization orientation but also on its dynamics to achieve fast switchings that can reach the THz range. In this work, we...
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Personal Name(s): | Guimaraes, Filipe (Corresponding author) |
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dos Santos Dias, Manuel / Bouaziz, Juba / Costa, Antonio T. / Muniz, Roberto B. / Lounis, Samir | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
Published in: | Scientific reports, 7 (2017) 1, S. 3686 |
Imprint: |
London
Nature Publishing Group
2017
|
PubMed ID: |
28623297 |
DOI: |
10.1038/s41598-017-03924-1 |
Document Type: |
Journal Article |
Research Program: |
Theoretical investigation of spin and charge dynamics in nanostructures Controlling Spin-Based Phenomena |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/14687 in citations.
Spin-orbit-related effects offer a highly promising route for reading and writing information in magnetic units of future devices. These phenomena rely not only on the static magnetization orientation but also on its dynamics to achieve fast switchings that can reach the THz range. In this work, we consider Co/Pt and Fe/W bilayers to show that accounting for the phase difference between different processes is crucial to the correct description of the dynamical currents. By tuning each system towards its ferromagnetic resonance, we reveal that dynamical spin Hall angles can non-trivially change sign and be boosted by over 500%, reaching giant values. We demonstrate that charge and spin pumping mechanisms can greatly magnify or dwindle the currents flowing through the system, influencing all kinds of magnetoresistive and Hall effects, thus impacting also dc and second harmonic experimental measurements. |