Schanze and J.
Glusac, M. Kose, H.
Jiang, K. Guo, M. Ogawa, Y. Kim, E.
Danilov, F. Castellano, J. Reynolds, K. Cardolaccia, A. Funston, M.
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- Rotaxane and pseudo-rotaxane molecules from molecular wires. Theoretical description?
Kose, J. Keller, J. Miller, K. Yongjun Li. Miller, J. Julia M. Jarrett H. Vella, Jr.. Please report errors in award information by writing to: awardsearch nsf.
Ji, E. Search Awards. Recent Awards. Presidential and Honorary Awards. About Awards. We consider exciton effects on current in molecular nanojunctions, using a model comprising a two two-level sites bridge connecting free-electron reservoirs. Our consideration can be considerably simplified by using the pseudospin description based on the symmetry properties of Lie group SU 2. We study the influence of the bias voltage, the Coulomb repulsion, and the energy-transfer interactions on the steady-state current and, in particular, focus on the effect of the excitonic interaction between bridge sites.
Our calculations show that in case of noninteracting electrons this interaction leads to reduction in the current at high voltage for a homodimer bridge. The effect of exciton blocking is modified for a heterodimer bridge and disappears for strong Coulomb repulsion at sites. In the latter case the exciton type interactions can open new channels for electronic conduction. In particular, in the case of strong Coulomb repulsion, conduction exists even when the electronic connectivity does not exist. GuangQi Li 1 , Boris D. Coherent charge transport through molecular wires: Exciton blocking and current from electronic excitations in the wire GuangQi Li, Boris D.
B 81 , — Published 12 April Abstract We consider exciton effects on current in molecular nanojunctions, using a model comprising a two two-level sites bridge connecting free-electron reservoirs.
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Log In. Figure 1 A model for energy-transfer-induced effects in molecular conduction. Figure 2 A schematic display of the block structure of the wire Hamiltonian. Figure 4 Different stages of the energy-transfer-induced current. Figure 7 Color online Same as Fig.