Spin-echo effect in a variable-gap semiconductor
Volkov A. S., Lipko A. L., Meretliev Sh. M., Tsarenkov B. V.
A new spin effect has been detected in a semiconductor in whose interior the electron g~factor changes sign: Oriented electrons excited at the surface, whose spins precess in a magnetic field, reacquire their original orientation at a certain distance from the surface, regardless of the strength of the field.