Journal
AIP ADVANCES
Volume 13, Issue 2, Pages -Publisher
AIP Publishing
DOI: 10.1063/9.0000369
Keywords
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We previously proposed that effective thermal-energy transfer in Bi:YIG LPE films occurs through enhanced SOC, and STE generation in Pt layer is increased by spin pumping from Bi:YIG film. However, we couldn't specifically relate the underlying mechanism to the driving force for spin current generation. In this paper, we discuss the origin of the driving force for increased spin currents through enhanced SOC in LPE YIG films.
We previously proposed the idea that the effective thermal-energy transfer from the phonon system to the spin system in liquid phase epitaxial (LPE) films of Bi-substituted yttrium iron garnet (Bi:YIG), a ferrimagnetic insulator, takes place through enhanced spin-orbit coupling (SOC) with local 3d-electron spins in Fe3+ ions, and that the spin-thermoelectric (STE) generation in a paramagnetic platinum (Pt) layer is raised by increased spin pumping to the Pt layer from the Bi:YIG film. However, we could not specifically relate the underlying mechanism to the driving force for the generation of spin currents due to nonequilibrium dynamics of magnons driven by the temperature gradient backward difference T in a magnetic insulator. In this paper, we discuss the origin of the driving force for generating spin currents, which are increased through enhanced SOC in LPE yttrium iron garnet films.(c) 2023 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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