Effects of phase-breaking scattering on the thermopower of molecular systems

Adrian Popescu and Paul M. Haney
Phys. Rev. B 86, 155452 – Published 26 October 2012

Abstract

We study the effects of elastic and inelastic scattering on the thermoelectric transport properties of molecular systems. These systems can exhibit high thermopower due to resonant transmission through molecular orbitals. We focus on systems which exhibit suppressed conductance near transmission antiresonances due to quantum interference. For coherent electronic transport, these antiresonances also lead to very high thermopower. We find that elastic and inelastic scattering reduces the thermopower and that this reduction is more severe for larger molecules and for molecules which are more weakly coupled to the leads.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 2 August 2012

DOI:https://doi.org/10.1103/PhysRevB.86.155452

©2012 American Physical Society

Authors & Affiliations

Adrian Popescu1,2 and Paul M. Haney1

  • 1Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6202, USA
  • 2Maryland NanoCenter, University of Maryland, College Park, Maryland 20742, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 86, Iss. 15 — 15 October 2012

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×