KOPS - The Institutional Repository of the University of Konstanz

Temperature-Dependent Spin Transport and Current-Induced Torques in Superconductor-Ferromagnet Heterostructures

Temperature-Dependent Spin Transport and Current-Induced Torques in Superconductor-Ferromagnet Heterostructures

Cite This

Files in this item

Files Size Format View

There are no files associated with this item.

MÜLLER, Manuel, Lukas LIENSBERGER, Luis FLACKE, Hans HUEBL, Akashdeep KAMRA, Wolfgang BELZIG, Rudolf GROSS, Mathias WEILER, Matthias ALTHAMMER, 2021. Temperature-Dependent Spin Transport and Current-Induced Torques in Superconductor-Ferromagnet Heterostructures. In: Physical Review Letters. American Physical Society (APS). 126(8), 087201. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.126.087201

@article{Muller2021Tempe-53132, title={Temperature-Dependent Spin Transport and Current-Induced Torques in Superconductor-Ferromagnet Heterostructures}, year={2021}, doi={10.1103/PhysRevLett.126.087201}, number={8}, volume={126}, issn={0031-9007}, journal={Physical Review Letters}, author={Müller, Manuel and Liensberger, Lukas and Flacke, Luis and Huebl, Hans and Kamra, Akashdeep and Belzig, Wolfgang and Gross, Rudolf and Weiler, Mathias and Althammer, Matthias}, note={Article Number: 087201} }

Liensberger, Lukas Müller, Manuel Müller, Manuel Althammer, Matthias Althammer, Matthias Belzig, Wolfgang 2021 Huebl, Hans 2021-03-11T09:21:48Z Flacke, Luis Flacke, Luis Liensberger, Lukas eng 2021-03-11T09:21:48Z Gross, Rudolf Gross, Rudolf Huebl, Hans Weiler, Mathias We investigate the injection of quasiparticle spin currents into a superconductor via spin pumping from an adjacent ferromagnetic metal layer. To this end, we use NbN-Ni<sub>80</sub>Fe<sub>20</sub>(Py) heterostructures with a Pt spin sink layer and excite ferromagnetic resonance in the Permalloy layer by placing the samples onto a coplanar waveguide. A phase sensitive detection of the microwave transmission signal is used to quantitatively extract the inductive coupling strength between the sample and the coplanar waveguide, interpreted in terms of inverse current-induced torques, in our heterostructures as a function of temperature. Below the superconducting transition temperature T<sub>c</sub>, we observe a suppression of the dampinglike torque generated in the Pt layer by the inverse spin Hall effect, which can be understood by the changes in spin current transport in the superconducting NbN layer. Moreover, below T<sub>c</sub> we find a large fieldlike current-induced torque. Temperature-Dependent Spin Transport and Current-Induced Torques in Superconductor-Ferromagnet Heterostructures Kamra, Akashdeep Belzig, Wolfgang Weiler, Mathias Kamra, Akashdeep

This item appears in the following Collection(s)

Search KOPS


Browse

My Account