講演情報
[10p-PA3-19]Strain-Sign-Dependent Electric-Field Tunability of Propagating Spin Waves in Epitaxial RIG Films: A Comparative Study of Tensile YIG/sGGG and Compressive LuIG/YAG Systems
〇(PC)shamim sarker1, EMK Ikball Ahamed1, Kamrul Hasan1, Dongxun Yang1, Hiroyasu Yamahara1, Munetoshi Seki1, Hitoshi Tabata1 (1.Tokyo University)
キーワード：
Spin waves、Magnon FET、Strain Engineering
Strain engineering of epitaxial RIG films offers a powerful route to tailor SW properties through magnetoelastic coupling. YIG films grown on sGGG substrates develop a tetragonal distortion (in-plane expansion, out-of-plane contraction) due to biaxial tensile strain, rendering propagating SWs electrically tunable [1]. An IDE patterned along the SW propagation path modulates the frequency and phase of MSSWs via in-plane orbital polarization. A key open question is whether this tunability is universal to tetragonally distorted garnets, or depends critically on the sign of in-plane strain and its geometric alignment with the applied field.