Title :
In-Situ Inelastic Electron Tunneling Spectroscopy of Bistable Molecular Junction Devices
Author :
Yoon, Heayoung ; Cai, Lintao ; Maitani, Masato ; Allara, David L. ; Mayer, Theresa S.
Author_Institution :
Pennsylvania State Univ., University Park
Abstract :
Inelastic electron tunneling spectroscopy (IETS) is a valuable in-situ spectroscopic analysis technique that can be applied in conjunction with electrical transport measurements to characterize and identify the molecular species under study by measuring its vibrational fingerprint. IETS is used to probe the vibrational modes excited in oligoaniline molecular junctions after switching between high and low conductance states by applying a critical threshold voltage. These spectroscopic measurements allow us to distinguish between the two molecular conformations that give rise to the observed conductance change and clarify the mechanism responsible for switching.
Keywords :
molecular configurations; molecular electronics; tunnelling spectra; vibrational modes; bistable molecular junction devices; conductance states; electrical transport measurement; in-situ inelastic electron tunneling spectroscopy; molecular conformations; molecular junctions; vibrational fingerprint; vibrational modes; Electric variables measurement; Electrodes; Electrons; Gold; Self-assembly; Spectroscopy; Temperature; Threshold voltage; Tunneling; Vibration measurement;
Conference_Titel :
Device Research Conference, 2007 65th Annual
Conference_Location :
Notre Dame, IN
Print_ISBN :
978-1-4244-1101-6
Electronic_ISBN :
1548-3770
DOI :
10.1109/DRC.2007.4373688
