Effect of vertex corrections on the enhancement of Gilbert damping in spin pumping into a two-dimensional electron gas
Source abstract
Abstract
We theoretically consider the effect of vertex correction on spin pumping from a ferromagnetic insulator (FI) into a two-dimensional electron gas (2DEG) in which the Rashba and Dresselhaus spin-orbit interactions coexist. The Gilbert damping in the FI is enhanced by elastic spin-flipping or magnon absorption. We show that the Gilbert damping due to elastic spin-flipping is strongly enhanced by the vertex correction when the ratio of the two spin-orbit interactions is near a special value at which the spin relaxation time diverges while that due to magnon absorption shows only small modification. We also show that the shift in the resonant frequency due to elastic spin-flipping is strongly enhanced in a similar way as the Gilbert damping.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Quantum and electron transport phenomena · Physics of Superconductivity and Magnetism · Magnetic properties of thin films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences, Beijing, China
CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, China
Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Japan
RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, Japan
Funding
Japan Society for the Promotion of Science · Ministry of Education, Culture, Sports, Science and Technology · Japan Science and Technology Agency
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