Helical magnetic structure and the anomalous and topological Hall effects in epitaxial B20 Fe${}_{1-y}$Co${}_y$Ge films

Charles S. Spencer, Jacob Gayles, Nicholas A. Porter +12

Epitaxial films of the B20-structure alloy Fe${}_{1-y}$Co${}_y$Ge were grown by molecular beam epitaxy on Si (111) substrates. The magnetization varied smoothly from the bulk-like valu…