Supplementary Materials

Supplementary note 1 includes thorough details regarding the theoretical model and all the associated parameters used for the simulations presented in this report. Supplementary note 2 includes simulations done for a broader range of externally applied magnetic field, thereby demonstrating the robustness of the bistable electron spin precession frequencies. Furthermore, supplementary note 2 includes computed electron spin dynamics when there is no Overhauser field acting on the electron spin system.