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Magnetoresistance effects are crucial for understanding the charge/spintransport as well as propelling the advancement of spintronic applications.Here we report the coexistence of magnetic moment-dependent (MD) and magneticfield-driven (FD) unidirectional magnetoresistance (UMR) effects inCoFeB/InSb/CdTe heterostructures. The strong spin-orbital coupling of InSb andthe matched impedance at the CoFeB/InSb interface warrant a distinct MD-UMReffect at room temperature, while the interaction between the in-plane magneticfield and the Rashba effect at the InSb/CdTe interface induces the markedFD-UMR signal that dominates the high-field region. Moreover, owning to thedifferent spin transport mechanisms, these two types of nonreciprocal chargetransport show opposite polarities with respect to the magnetic fielddirection, which further enable an effective phase modulation of theangular-dependent magnetoresistance. Besides, the demonstrations of both thetunable UMR response and two-terminal spin-orbit torque-driven magnetizationswitching validate our CoFeB/InSb/CdTe system as a suitable integrated buildingblock for multifunctional spintronic device design.

Interplay between moment-dependent and field-driven unidirectional magnetoresistance in CoFeB/InSb/CdTe heterostructures