Vibrationally Induced Two-Level Systems in Single-Molecule Junctions

Abstract

Single-molecule junctions are found to show anomalous spikes in dI/dV spectra. The position in energy of the spikes are related to local vibration mode energies. A model of vibrationally induced two-level systems reproduces the data very well. This mechanism is expected to be quite general for single-molecule junctions. It acts as an intrinsic amplification mechanism for local vibration mode features and may be exploited as a new spectroscopic tool.

4 pages, 4 figures

References in corpus (1)

• Slow two-level systems in point contacts

Cited by in corpus (3)

• Molecular Transport Junctions: Vibrational Effects
• Huge negative differential conductance in Au-H2 molecular nanojunctions
• Josephson-current induced conformational switching of a molecular quantum dot