CONTACT GEOMETRY EFFECT ON CURRENT–VOLTAGE BEHAVIOR IN SINGLE-MOLECULE JUNCTIONS

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RAMEZANI AKBARABADI S.; RAHIMPOUR SOLEIMANI H.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: NANOSCALE Year:2015 | Volume:2 | Issue:3 Page(s): 125-129

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Title

CONTACT GEOMETRY EFFECT ON CURRENT–VOLTAGE BEHAVIOR IN SINGLE-MOLECULE JUNCTIONS

Author(s)

RAMEZANI AKBARABADI S. | RAHIMPOUR SOLEIMANI H. | Issue Writer Certificate

Keywords

MOLECULAR JUNCTIONSQ2

EXTENDED HUCKEL THEORYQ2

NON-EQUILIBRIUM GREEN’S FUNCTIONQ2

JUNCTION GEOMETRYQ2

Abstract

In this paper, electron transport in a metal/molecule/metal molecular system Includes biphenyl-dithiol molecule and three-dimensional gold electrodes for three different types of contact geometry, are investigated. The Hamiltonian of the molecule is calculated based on the Hückel method and the current is computed by the NON-EQUILIBRIUM GREEN’S FUNCTION method in the framework of Landauer–Büttiker formalism. Transmission coefficient and current voltage characteristics are calculated for three different geometric structures. The results show that electron transport is strongly affected by quantum interference of electron waves and the geometry of the molecule-electrode interface. The current amplitude for symmetric coupling is larger than two other asymmetric couplings because of the quantum interference effects of the electron waves traveling through the different paths.

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APA: Copy

RAMEZANI AKBARABADI, S., & RAHIMPOUR SOLEIMANI, H.. (2015). CONTACT GEOMETRY EFFECT ON CURRENT–VOLTAGE BEHAVIOR IN SINGLE-MOLECULE JUNCTIONS. NANOSCALE, 2(3), 125-129. SID. https://sid.ir/paper/256985/en

Vancouver: Copy

RAMEZANI AKBARABADI S., RAHIMPOUR SOLEIMANI H.. CONTACT GEOMETRY EFFECT ON CURRENT–VOLTAGE BEHAVIOR IN SINGLE-MOLECULE JUNCTIONS. NANOSCALE[Internet]. 2015;2(3):125-129. Available from: https://sid.ir/paper/256985/en

IEEE: Copy

S. RAMEZANI AKBARABADI, and H. RAHIMPOUR SOLEIMANI, “CONTACT GEOMETRY EFFECT ON CURRENT–VOLTAGE BEHAVIOR IN SINGLE-MOLECULE JUNCTIONS,” NANOSCALE, vol. 2, no. 3, pp. 125–129, 2015, [Online]. Available: https://sid.ir/paper/256985/en

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