[13p-S302-1~15] 10.1 Emerging materials in spintronics and magnetics (including fabrication and characterization methodologies)

▼ [13p-S302-8] Electrically tunable magnon FET controlled by ionic polymer gate

〇(D)shamim sarker¹, Hiroyasu Yamahara¹, Munetoshi Seki¹, Hitoshi Tabata¹ (1.Tokyo Univ)

Keywords:Spin wave, YIG, Organic polymer

We are exploring electric field-controlled SW modulation, which is difficult due to the absence of direct coupling between E-field and spin. We have developed an ionic polymer and YIG heterostructure (Fig.1(c)). A positive and/or negative voltage was applied across the polymeric gate during the SW measurement. Fig.1(d) implies that applying a positive voltage across the polymer suppresses the SW propagation while the negative voltage enhances the SW propagation. So, it can act as a magnon switching upon the application of positive and negative voltage. Here we have controlled the damping of the YIG/Pt heterostructure by tuning the polymeric gate.