We report a theory of thermal spin pumping into proximity magnets under a transverse-bias-driven heat flow of magnons in mag-netic films when the dipolar coupling to the magnetic gate is tuned to be"chiral".While there is no rectification of the magnon current in the film,we predict that chirality diverts a large percentage(50％for perfect chirality)of it into the gate.This transverse thermal spin pumping effect can be controlled by rotating the film magnetization and may help manage the heat flow in future magnonic circuits.
magnonchiralityquantum transporttransistor
Tao Yu、Chengyuan Cai、Gerrit E.W.Bauer
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School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China
WPI-AIMR and Institute for Materials Research and SCIS,Tohoku University,Sendai 980-8577,Japan
Kavli Institute for Theoretical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China
国家重点研发计划国家自然科学基金startup grant of Huazhong University of Science and TechnologyJSPS KAKENHIJSPS KAKENHI
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