Fig. 3
From: Tunable giant magnetoresistance in a single-molecule junction
Spatial distribution of the Kondo resonance at different magnetic fields. a dI/dV mapping taken around the Fermi energy at 0 T (setpoint: I = 0.3 nA, Vb = −40 mV. Image size: 2.2 nm × 2.2 nm). b and c dI/dV spectra taken along different directions on the FePc molecule (as indicated by the arrows). The spectra start from the Fe center and end at about 6 Å away. The black dashed line roughly indicates the position where the Kondo resonance is too weak to see in the dI/dV spectra. Inset: STM image (2.2 nm × 2.2 nm) of the FePc. d–f, same as a–c except taken at B = 9 T. The Kondo resonance (peak) displays a nearly circular spatial distribution in d
