fig5

Figure 5. Temperature-dependent non-volatile multilevel states. TMR loops within a small magnetic field range, temperature-dependent non-volatile multilevel states assisted by a fixed magnetic field (+0.3 T), and mechanism illustration within (A) 20~40 K and (B) 10~20 K. “0” and “1” correspond to the low and high resistance states at the corresponding temperatures; Temperature-dependent non-volatile multilevel states within 10~40 K starting from different initial states: (C) “0” and (D) “1” assisted by a fixed magnetic field (+0.3 T). TMR: Tunneling magnetoresistance.