Detection of Microwave Spin Pumping Using the Inverse Spin Hall Effect

C Hahn 1 G. de Loubens 1 M Viret 1 Olivier Klein 2 V.V. Naletov 3, 2 J Youssef 4
1 LNO - Laboratoire Nano-Magnétisme et Oxydes
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
2 SPEC - UMR3680 - Service de physique de l'état condensé
3 KPFU - Kazan State University
4 LMB - Laboratoire de magnétisme de Bretagne
Abstract : We report on the electrical detection of the dynamical part of the spin pumping current emitted during ferromagnetic resonance (FMR) using the inverse Spin Hall Effect (ISHE). The experiment is performed on a YIG|Pt bilayer. The choice of YIG, a magnetic insulator, ensures that no charge current flows between the two layers and only the pure spin current produced by the magnetization dynamics is transferred into the adjacent strong spin-orbit Pt layer via spin pumping. To avoid measuring the parasitic eddy currents induced at the frequency of the microwave source, a resonance at half the frequency is induced using parametric excitation in the parallel geometry. Triggering this nonlinear effect allows to directly detect on a spectrum analyzer the microwave component of the ISHE voltage. Signals as large as 30 µV are measured for precession angles of a couple of degrees. This direct detection provides a novel efficient means to study magnetization dynamics on a very wide frequency range with great sensitivity.
Document type :
Journal articles
Complete list of metadatas

Cited literature [31 references]  Display  Hide  Download
https://hal-cea.archives-ouvertes.fr/cea-01385080
Contributor : Dominique Girard <>
Submitted on : Thursday, October 20, 2016 - 5:12:42 PM
Last modification on : Thursday, February 7, 2019 - 3:22:31 PM

File

1308.3433.pdf
Files produced by the author(s)

Identifiers

Collections

CEA | CNRS | UNIV-BREST | DSM-IRAMIS | IRAMIS-SPEC | CEA-DRF

Citation

C Hahn, G. de Loubens, M Viret, Olivier Klein, V.V. Naletov, et al.. Detection of Microwave Spin Pumping Using the Inverse Spin Hall Effect. Physical Review Letters, American Physical Society, 2013, 111 (21), pp.217204. ⟨10.1103/PhysRevLett.111.217204⟩. ⟨cea-01385080⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

124

Files downloads

317

Contact

CCSD