SPIN DATA STORAGE. “Emerging technology such as spintronics can solve the problem. Spintronics utilizes another property of electrons called spin to encode data information. The data are stored based on the spin states (either up or down) of electrons that are already present. The spin state only changes upon exposure to a magnetic field, and hence no potential leakage problem.”
https://link.springer.com/article/10.1557/s43577-021-00135-y