Journal
PHYSICAL REVIEW B
Volume 83, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.165203
Keywords
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Funding
- MIUR [2207FW3MJC003]
- University of Napoli Federico II [FARO 2010]
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Transport properties, spectral function, and optical conductivity of the adiabatic one-dimensional Su-Schrieffer-Heeger model are studied with particular emphasis on the model parameters suitable for rubrene single-crystal-based field effect transistors. We show that the mobility, calculated by using the Kubo formula for conductivity including vertex renormalization, vanishes unless we introduce an ad hoc broadening of the system energy levels. Furthermore, the apparent contradiction between angle-resolved photoemission data and transport properties is clarified by studying the behavior of the spectral function. Finally, a peak in the optical conductivity at very low energy is obtained and discussed in connection with the available experimental data for rubrene-based devices.
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