B) Magnetism at the atomic scale

Chains of individual Co atoms on Mn monolayer on W(110)

The spin resolved density of states produce different apparent heights and shapes of the atoms, which allow us to retrieve the magnetization direction of each atom and study the competition of magnetic interactions among atoms and between atoms and substrate, leading to an artificial spin-spiral state in 1 dimension. MOVE POINTER ACROSS IMAGE TO ADD MORE ATOMS

Spin polarized STM images at bias=5 mV with Fe-coated W tip, 1.2 K