Abstract
The Inverse Spin-Hall Effect (ISHE), Conversion of Spin Currents into Charge Currents, Has Recently Been Observed in Paramagnetic Metal/Ferrimagnetic Insulator Bilayer Films by Means of the Spin Pumping. Here we Investigate the ISHE Induced by the Spin Pumping on Pt/Ti/Y3Fe5O12 and Pt/Ti/BiY2Fe5O12 Films, where the Y3Fe5O12 (BiY2Fe5O12) and Pt Layers Are Separated by Thin Ti Layer. In these Systems, we Measured Electric Voltage due to the ISHE in Pt/Ti/Y3Fe5O12 (BiY2Fe5O12) Systems at Room Temperature. The Experimental Results Show that the ISHE Signal Disappears in the Pt/Ti/Y3Fe5O12 (BiY2Fe5O12) Systems. These Results Indicate that the Spin Pumping between Y3Fe5O12 (BiY2Fe5O12) and Ti Layer Is Suppressed. This Method Enables us to Suppress the Spin Currents without Non-Magnetic Insulators.
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