Highly conductive single naphthalene and anthracene molecular junction with well-defined conductance

Journal Article · Mon Mar 09 04:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4914501· OSTI ID:22395722

Liu, Chenyang ^[1]; Kaneko, Satoshi; Komoto, Yuki; Fujii, Shintaro; Kiguchi, Manabu ^[1]

---

1. Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 W4-10, Ookayama, Meguro-ku, Tokyo 152-8551 (Japan)

We performed electronic investigation on single acene molecular junctions bridging Au-electrodes in ultra-high vacuum conditions using mechanically controllable break junction technique. While the molecular junctions displayed various conductance values at 100 K, they exhibited well-defined high conductance values (∼0.3 G{sub 0}) at 300 K, which is close to that of metal atomic contact. Direct π-binding of the molecules to the Au-electrodes leads to the high conductivities at the metal-molecule interface. At the elevated temperature, single molecular junctions trapped in local metastable structures can be fallen into energetically preferential more stable state and thus we fabricated structurally well-defined molecular junctions.

• OSTI ID: 22395722
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 10 Vol. 106; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTHRACENE
ELECTRIC CONDUCTIVITY
ELECTRIC CONTACTS
ELECTRODES
GOLD
INTERFACES
MOLECULES
NAPHTHALENE
SEMICONDUCTOR JUNCTIONS
TEMPERATURE DEPENDENCE
TRAPPING