Fig. 7: The chiral-induced spin selectivity (CISS) effect and earlier experimental observations.
a Schematic illustration of CISS. When electrons move through a chiral potential field, they generate an effective magnetic field that acts on the electrons, stabilizing one spin direction. p is the pitch of chiral potential. b Energy distribution as photoelectrons injected (i) L, C-terminus connected, (ii) D, N-terminus connected, and (iii) D, C-terminus connected helical polyalanine films using a left (negative spin polarization; red, solid) or right circularly polarized laser (positive spin polarization; blue, dashed). Or linearly (no spin polarization; black, dotted) light. c Current–voltage curves of helical self-assembled polyalanine molecules monolayers (top) and its cluster (down) adsorbed on magnetic Au/Co/Au substrates. [a, b are adapted from ref. 113, and c is adapted from ref. 114. with permission].
