2012/06/29 by Vincent Castel, Jamal Ben Youssef, Nynke Vlietstra +3 · 96 citations
Engineering · Materials Science · Physics and Astronomy · #Condensed matter physics #Ferrimagnetism #Laser linewidth #Magnetic Properties and Applications #Magnetic field #Magnetic properties of thin films #Magnetization #Magneto-Optical Properties and Applications #Materials science #Microwave #Nanotechnology #Optics #Physics #Spin (aerodynamics) #Thin film #Yttrium iron garnet #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.86.134419
published in Physical Review B 86(13) (American Physical Society) · 7 pages, 5 figures
arxiv created 2012/06/29 · openalex publication_date 2012/10/22 · arxiv updated 2015/06/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
This paper presents the frequency dependence of the spin-current emission by spin pumping in a hybrid ferrimagnetic insulator/normal metal system. The system is based on a ferrimagnetic insulating thin film of yttrium iron garnet (YIG, 200 nm) grown by liquid-phase epitaxy coupled with a normal metal with a strong spin-orbit coupling (Pt, 15 nm). The YIG layer presents an isotropic behavior of the magnetization in the plane, a small linewidth, and a roughness lower than 0.4 nm. Here we discuss how the voltage signal from the spin-current detector depends on the frequency (0.6--7 GHz), the microwave power, Pin (1--70 mW), and the in-plane static magnetic field. A strong enhancement of the spin-current emission is observed at low frequencies, showing the appearance of nonlinear phenomena.