Electric field-induced switching among multiple conductance pathways in single-molecule junctions

Here, we report the switching among multiple conductance pathways achieved by sliding the scanning tunneling microscope tip among different binding sites under different electric fields. With an increase in the electric field, high molecular conductance states appear, suggesting the formation of different configurations in single-molecule junctions. The switch can be operated in situ and reversibly, which is also confirmed by the apparent conductance conversion in I-V measurements. Theoretical simulations also agree well with the experimental results, which implies that the electric field enables the possibility to trigger switching in single-molecule junctions.

Automated summary

The study reports the switching among multiple conductance pathways achieved by sliding the scanning tunneling microscope tip among different binding sites under different electric fields, leading to the appearance of high molecular conductance states. The switch can be operated in situ and reversibly, with apparent conductance conversion in I-V measurements. Theoretical simulations agree well with experimental results, indicating the possibility of triggering switching in single-molecule junctions with electric fields.