
July 2, 2015 17:33 PSP Book - 9in x 6in 10-Nanomagnetism-c10
SP Scanning Tunneling Microscopy Applications 267
respectively. Strikingly, when a magnetic tip is used, the contrast
sequence now converts to ACABCB.. . (Fig. 10.11). The letter can
only be explained by a spin sequence. As shown in Fig. 10.11c,
the MnN layer whose spins are parallel with the tip’s spin exhibits
an enhanced dI/dV signal, while that whose spins are antiparallel
exhibits a reduced dI/dV signal. It is amenable from the expected
spin structure that the spin-sensitive contrast sequence to be
ACABCB.. . and it is consistent with the observed sequence.
While the MnN layers have been ...