Abstract:A strong anisotropic magnetoresistance
(AMR) effect induced by
spin–orbit coupling is the basis for constructing a highly
sensitive and reliable magnetic sensor. Presently, effective AMR enhancement
in traditional films focuses on the modulation of the lattice or charge
degree of freedom, leading to a general AMR ratio below 4%. Here,
we demonstrate a different strategy to strengthen the AMR effect by
tuning the orbital degree of freedom. By inserting an oxygen-affinitive
Hf layer into a Ta/MgO/NiFe/MgO/Ta mul… Show more
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