Abstract
We validate that off-resonant electron transport across ultra-short oligomer molecular junctions is characterised by a conductance which decays exponentially with length, and we discuss a method to determine the damping factor via the energy spectrum of a periodic structure as a function of complex wavevector. An exact mapping to the complex wavevector is demonstrated by first-principle-based calculations of: (a) the conductance of molecular junctions of phenyl-ethynylene wires covalently bonded to graphitic ribbons as a function of the bridge length, and (b) the complex-band structure of poly-phenyl-ethynylene.
| Original language | English |
|---|---|
| Pages (from-to) | 268-273 |
| Number of pages | 6 |
| Journal | Chemical Physics Letters |
| Volume | 389 |
| Issue number | 4-6 |
| DOIs | |
| Publication status | Published - 11 May 2004 |
| Externally published | Yes |