Nonlinear spin pumping induced by parametric excitation

作者：Ando K^*; An T; Saitoh E

来源：Applied Physics Letters, 2011, 99(9): 092510.

DOI：10.1063/1.3633348

Spin pumping driven by parametric spin excitation was observed in a Pt/La:Y(3)Fe(5)O(12) film. We applied microwave with doubled frequency of the ferromagnetic resonance and detected a spin current emitted from the La:Y(3)Fe(5)O(12) layer using the inverse spin-Hall effect (ISHE) in the Pt layer. In the ISHE signal, we found nonlinear dependence and threshold with respect to applied microwave power, demonstrating that the spin current generation is due to nonlinear coupling between microwave and spin dynamics. These results will be essential for developing active elements in spin current circuits.

• 出版日期2011-8-29