Bending Switch of Gigahertz La_0.67Sr_0.33MnO₃Thin Film Under Spin Wave Excitation

Spin waves, used for information processing and transmission, promise huge potential in the applications of the spintronic devices with low loss, minimal sizes, and high frequency. More attentions have been focused on all-magnon data processing utilizing traveling spin waves and moving domain walls. Bending control of spin wave is an effective modulation method for magnetic properties, and easily attuned to the trends of flexible magnon spintronics in future. In this work, we demonstrate the excitation of spin waves in the flexible La0.67Sr0.33MnO3 thin film by mechanical bending, which can be taken as the states for On and Off in microwave single-pole single-throw switches. Besides, the microwave magnetisms of the unbent and bending La0.67Sr0.33MnO3 thin films have been studied. The bending of La0.67Sr0.33MnO3 thin films does not change the microwave ferromagnetic resonance field. Our results demonstrate that the controllable spin wave state by mechanical bending has enormous potential for future flexible magnon spintronics.