Figure 2 | Scientific Reports

Figure 2

From: Antiferromagnetic Spin Coupling between Rare Earth Adatoms and Iron Islands Probed by Spin-Polarized Tunneling

Figure 2

Antiferromagnetic spin coupling of thulium adatoms and iron monolayers.

(a) Spin-polarized constant-height dI/dV map (Vbias = −200 mV; Vmod = 2 mV) of Tm adatoms adsorbed on two Fe ML islands on W(110). (b) Line scans through the centers of the two Tm adatoms marked by the short segments in (a) (It = 3 nA, Vbias = −900 mV; Vmod = 4 mV). (c) Histograms of the dI/dV values for the whole area displayed in (a), green line histogram and for the two regions delimited by red and blue rectangles (island and tip magnetization parallel and antiparallel, respectively), red and blue lines. Data sets are offseted in the horizontal axis for clarity. Inset in (a): visualization of the proposed spin configurations. Inset in (c) shows in detail the dI/dV distribution near the adatom apices, with no horizontal offset for better comparison.

Back to article page