Electronic transport within a quasi two-dimensional model for rubrene single-crystal field effect transistors

Details Electronic transport within a quasi two-dimensional model for rubrene single-crystal field effect transistors Electronic transport within a quasi two-dimensional model for rubrene single-crystal field effect transistors

2011-08-26

arxiv.org/abs/1108.5263v1

Phys. Rev. B 84, 245204 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 9 figures, Submitted

Scientific paper

10.1103/PhysRevB.84.245204

Spectral and transport properties of the quasi two-dimensional adiabatic Su-Schrieffer-Heeger model are studied adjusting the parameters in order to model rubrene single-crystal field effect transistors with small but finite density of injected charge carriers. We show that, with increasing temperature $T$, the chemical potential moves into the tail of the density of states corresponding to localized states, but this is not enough to drive the system into an insulating state. The mobility along different crystallographic directions is calculated including vertex corrections which give rise to a transport lifetime one order of magnitude smaller than spectral lifetime of the states involved in the transport mechanism. With increasing temperature, the transport properties reach the Ioffe-Regel limit which is ascribed to less and less appreciable contribution of itinerant states to the conduction process. The model provides features of the mobility in close agreement with experiments: right order of magnitude, scaling as a power law $T^{-\gamma}$, with $\gamma$ close or larger than two, and correct anisotropy ratio between different in-plane directions. Due to a realistic high dimensional model, the results are not biased by uncontrolled approximations.

Affiliated with

Also associated with

No associations

Rating

Electronic transport within a quasi two-dimensional model for rubrene single-crystal field effect transistors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electronic transport within a quasi two-dimensional model for rubrene single-crystal field effect transistors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic transport within a quasi two-dimensional model for rubrene single-crystal field effect transistors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-501862