The STM images of Fe chains at (a) 1.3 ML and (b) 1.7 ML. (c) the schematic diagram of the model. (d) Schematic evolution of the growth of Fe island, the initial nucleation (yellow area), growth (blue area), and coalescence (gray area); (e) the 3D diagrammatic sketch of one Fe island.
Comparison of the magnetometric tenor for two interacting islands located at a distance along direction between the FFT numerical approach and DIP. The red circle represents the dipolar approximated results, whereas the black block indicates the FFT results. The three diagonal elements are all compared. The nondiagonal elements of magnetometric tenor are nearly equal to zero.
Left: the M-T curves for three samples at different coverage. Right: the ordering temperature as a function of coverage for four cases. Blue diamonds: FFT method with exchange interaction; Green diamonds: FFT method without exchange interaction; red circles: DIP method without exchange interaction; black blocks: DIP method with exchange interaction.
[(a) and (b)] Representative calculated hysteresis loops for the system with coverage ML and 1.7 ML. [(c) and (d)] The corresponding SMOKE curves with the same external parameters.
Time dependence of the magnetization with external parameters ( ML, , and ).
Summary of Fe islands parameters and magnetic states at different coverage.
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