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arXiv · 1509.00984

Searching the hearts of graphene-like molecules for simplicity, sensitivity and logic

Sara Sangtarash·Cancan Huang·Hatef Sadeghi·Gleb Sorohhov·Jürg Hauser·Thomas Wandlowski·Wenjing Hong·Silvio Decurtins·Shi-Xia Liu·Colin J. Lambert
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Abstract

If quantum interference patterns in the hearts of polycyclic aromatic hydrocarbons (PAHs) could be isolated and manipulated, then a significant step towards realizing the potential of single-molecule electronics would be achieved. Here we demonstrate experimentally and theoretically that a simple, parameter-free, analytic theory of interference patterns evaluated at the mid-point of the HOMO-LUMO gap (referred to as M-functions) correctly predicts conductance ratios of molecules with pyrene, naphthalene, anthracene, anthanthrene or azulene hearts. M-functions provide new design strategies for identifying molecules with phase-coherent logic functions and enhancing the sensitivity of molecular-scale interferometers.

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Sara Sangtarash, Cancan Huang, Hatef Sadeghi, Gleb Sorohhov, Jürg Hauser, Thomas Wandlowski, Wenjing Hong, Silvio Decurtins, Shi-Xia Liu, Colin J. Lambert. 2015-09-03. Searching the hearts of graphene-like molecules for simplicity, sensitivity and logic. https://doi.org/10.1021/jacs.5b06558

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