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arXiv · 2409.00874

Microscopic theory of Rashba-Edelstein magnetoresistance

Masaki Yama·Mamoru Matsuo·Takeo Kato
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Abstract

We theoretically study Rashba-Edelstein magnetoresistance (REMR) in a two-dimensional electron gas (2DEG) system with Rashba and Dresselhaus spin-orbit interactions. We consider a microscopic model of a junction system composed of a ferromagnetic insulator and a 2DEG, and derive analytic expressions for the spin and current densities in the 2DEG using the Boltzmann equation, while taking into account dynamical contributions from magnons. Our findings reveal that the sign of the REMR varies depending on the type of interface. We also discuss the experimental relevance of our results.

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Masaki Yama, Mamoru Matsuo, Takeo Kato. 2024-09-01. Microscopic theory of Rashba-Edelstein magnetoresistance. https://doi.org/10.1103/physrevb.111.144416

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