Fig. 4
From: Non-collinear spin states in bottom-up fabricated atomic chains
Spin-spiral in Fe16 chain coupled to a Co stripe. a STM topograph of an Fe16 chain with dNN = 3a RKKY-coupled to a ferromagnetic Co stripe on the left. (Is = 0.5 nA, Vs = 6 mV). The white scale bar has a length of 2 nm. b SPSTM images of the two states 0 and 1 of the Fe16 chain stabilized by the two magnetization states of the Co stripe taken with out-of-plane sensitive tip (Bz = 0 T, Is = 0.5 nA, Vs = 6 mV). The magnetic state of the Co stripe was reversed between top and bottom image. c Spin-asymmetry Δi between states 1 and 0 of atom i of the Fe16 chain taken from the images in b (see text). For the gray points, the short-range antiferromagnetic component has been removed by reversing the sign of all even numbered atoms, such that the long range spin-spiral component is visible. The error bars were determined via error propagation from the standard deviation of each measured height (measured three times)
