2004/08/03 by Lam H. Yu, L. H. Yu, Z.K. Keane +11 · 2 citations
Engineering · Physics and Astronomy · #Molecular Junctions and Nanostructures #Nanowire Synthesis and Applications #Quantum and electron transport phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.93.266802
published as Phys. Rev. Lett. 93, 266802 (2004) · 5 pages, 4 figures. Supplementary information available upon request
arxiv created 2004/08/03 · openalex publication_date 2004/12/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
In single-molecule transistors, we observe inelastic cotunneling features that correspond energetically to vibrational excitations of the molecule, as determined by Raman and infrared spectroscopy. This is a form of inelastic electron tunneling spectroscopy of single molecules, with the transistor geometry allowing in situ tuning of the electronic states via a gate electrode. The vibrational features shift and change shape as the electronic levels are tuned near resonance, indicating significant modification of the vibrational states. When the molecule contains an unpaired electron, we also observe vibrational satellite features around the Kondo resonance.