Ru insertion effect on spin Seebeck effect of YIG/Ta or Pt

摘要

Spin Seebeck effect and inverse spin Hall effectcan realize the thermoelectric generatorin a uniformstructure.However,itis necessarytoincrease Spin Seebeck coefficient for practical use. We have reportedimprovementofSpinSeebeck coefficientby inserting Ru layerat the interface of YIG and Ta.Since there is possibility of Ru oxidization at the interface with YIG,we compare the metallic Ruand the intentionally oxidized RuO effects on the spin Seebeck coefficientsand concluded the metallic Ru improved spin Seebeck coefficient. In this report,wefocus on the metallic Ru insertion effect on Spin Seebeck coefficient.