Investigation of inelastic electron tunneling spectra of metal-molecule-metal junctions fabricated using direct metal transfer method

Journal Article · Mon Feb 09 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4908185· OSTI ID:22412623

Jeong, Hyunhak; Hwang, Wang-Taek; Kim, Pilkwang; Kim, Dongku; Jang, Yeonsik; Min, Misook; Park, Yun Daniel; Lee, Takhee ^[1]; Xiang, Dong ^[2]; Song, Hyunwook ^[3]; Jeong, Heejun ^[4]

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1. Department of Physics and Astronomy, Institute of Applied Physics, Seoul National University, Seoul 151-747 (Korea, Republic of)
2. Institute of Modern Optics, Nankai University, Tianjin 300071 (China)
3. Department of Applied Physics, Kyung Hee University, Yongin-si, Gyeonggi-do 446–701 (Korea, Republic of)
4. Department of Applied Physics, Hanyang University, Ansan 426-791 (Korea, Republic of)

We measured the inelastic electron tunneling spectroscopy (IETS) characteristics of metal-molecule-metal junctions made with alkanethiolate self-assembled monolayers. The molecular junctions were fabricated using a direct metal transfer method, which we previously reported for high-yield metal-molecule-metal junctions. The measured IETS data could be assigned to molecular vibration modes that were determined by the chemical structure of the molecules. We also observed discrepancies and device-to-device variations in the IETS data that possibly originate from defects in the molecular junctions and insulating walls introduced during the fabrication process and from the junction structure.

• OSTI ID: 22412623
• Journal Information: Applied Physics Letters, Vol. 106, Issue 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC CONTACTS
ELECTRON SPECTROSCOPY
ELECTRONS
FABRICATION
METALS
MOLECULAR STRUCTURE
MOLECULES
OSCILLATION MODES
SEMICONDUCTOR JUNCTIONS
TUNNEL EFFECT