Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale Conductor

Figure 1

Model of the device studied in this paper. Virtual atoms, denoted by dots, are associated with an s-like orbital, and neighboring orbitals are connected by hopping interaction “” The conductor consists of an array of the virtual atoms. On both sides of the conductor, there are reservoirs shown by shaded areas. A defect between reservoirs and conductor indicated by cross where the hopping interaction is replaced by a smaller value.