Accumulation of spin-polarized states of charge carriers and a spintronic battery
L.А. Pastur, V.V. Slavin, and A.V. Yanovskii
B.Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine47 Nauky Ave., Kharkiv 61103, Ukraine
Received March 11, 2020, published online May 26, 2020
Spin valves based on materials where spin-flip is suppressed by the spatial separation of charge carriers while preserving electroneutrality in the volume of the valve are considered. The possibility of these valves usage as electric batteries is discussed. Regulating the potential difference on the valve, one can expect the effects of incommensurability of the type of “devil’s staircases” associated with the Coulomb interaction and redistribution of electrons when charging and discharging the battery. We also predict the effects of the appearance and disappearance of spontaneous spin polarization of the conductivity electrons at Fermi level changing in the valve. Such spin valves can also be used in the implementation of spintronic memory cells, supercapacitors, and similar devices.
Key words: spin polarization, spin-flip, spin valve.