Magnetic and transport properties of Fe V1− atom bridge constructed between an STM tip and a solid surface

Abstract

We have investigated the magnetic and transport properties of an atom bridge made from magnetic materials, which is an atom-scale wire constructed between a scanning tunneling microscopy tip and a solid surface , with the aid of ab initio calculations. In the case of Fe β V 1− β alloy atom bridges, we have found that the value of the mean magnetic moment is similar to that of the corresponding alloy bulk, and the quantized conductance contribution from both the majority and minority spin electrons changes as β changes. These properties are different from the case of Fe 1− α Ni α alloy atom bridge.