Single Molecule Electronic Devices

Song, Hyunwook; Reed, Mark A.; Lee, Takhee

doi:10.1002/adma.201004291

Cited by 442 publications

(401 citation statements)

References 205 publications

(275 reference statements)

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“…1 In this respect, the viability of the theoretical concept 2 to integrate organic molecules in electronic devices was experimentally demonstrated for diodes, 3,4 field-effect transistors, 5 switches, 6,7 or ultrahigh-density memory circuits. 8 A fundamental issue in molecular electronics is the ability to theoretically understand and thus to predict the properties of molecule-surface systems used in nanoelectronic devices.…”

Section: Introductionmentioning

confidence: 99%

Semiempirical van der Waals interactions versusab initiononlocal correlation effects in the thiophene-Cu(111) system

et al. 2012

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The adsorption mechanism of single thiophene (C 4 H 4 S), 4-thiophene (C 16 H 10 S 4 ), and their dimers on the Cu(111) surface has been studied in the framework of the density functional theory (DFT). The importance of the London dispersion effects on the molecule-surface adsorption geometry and the corresponding binding energy was investigated by using semiempirical and first-principles methods. Interestingly, the physisorption character of the thiophene bonding on Cu(111) suggested by strength of the molecule-surface interaction as revealed by the DFT calculations turns out to be a weak chemisorption even for the DFT ground-state geometry when a nonlocal correlation energy functional [Dion et al., Phys. Rev. Lett. 92, 246401 (2004)] is used. Our ab initio calculations also suggest that the formation of thiophene and 4-thiophene dimers is energetically favorable with respect to the adsorption of single molecules.

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Section: Introductionmentioning

confidence: 99%

Semiempirical van der Waals interactions versusab initiononlocal correlation effects in the thiophene-Cu(111) system

et al. 2012

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“…In many instances, a convenient way for tuning the characteristics of such interfaces is by using molecular (mono)layers. These can even adopt the role of functional elements in devices, for example, in highly efficient organic monolayer transistors1, 2 or as self‐assembled monolayer (SAM) based devices in the field of molecular electronics 3, 4, 5, 6, 7, 8, 9, 10, 11. The spatial localization and energetics of the electronic states in these layers play a crucial role, as the states serve as “channels” for the electrical current 12, 13.…”

Section: Introductionmentioning

confidence: 99%

A Toolbox for Controlling the Energetics and Localization of Electronic States in Self‐Assembled Organic Monolayers

2015

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Controlling the nature of the electronic states within organic layers holds the promise of truly molecular electronics. To achieve that we, here, develop a modular concept for a versatile tuning of electronic properties in organic monolayers and their interfaces. The suggested strategy relies on directly exploiting collective electrostatic effects, which emerge naturally in an ensemble of polar molecules. By means of quantum‐mechanical modeling we show that in this way monolayer‐based quantum‐cascades and quantum‐well structures can be realized, which allow a precise control of the local electronic structure and the localization of electronic states. Extending that concept, we furthermore discuss strategies for activating spin sensitivity in specific regions of an organic monolayer.

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“…In parallel, there is also a current endeavor to develop molecular wires and molecular electronics based on singlemolecule junctions [6][7][8]. Here there is also interest in conjugated cyclic molecules, as their multiply-connected topology is expected to enable conductance modulation by means of the quantum interference processes [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Role of alternance symmetry in magnetoconductance

Planelles

Climente

2014

Phys. Rev. B

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We show that the direction of coherent electron transport across a cyclic system of quantum dots or a cyclic molecule can be modulated by an external magnetic field if the cycle has an odd number of hopping sites, but the transport becomes completely symmetric if the number is even. These contrasting behaviors, which remain in the case of interacting electrons, are a consequence of the absence or presence of alternance symmetry in the system. These findings are relevant for the design of nanocircuits based on coupled quantum dots or molecular junctions.

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Single Molecule Electronic Devices

Cited by 442 publications

References 205 publications

Semiempirical van der Waals interactions versusab initiononlocal correlation effects in the thiophene-Cu(111) system

Semiempirical van der Waals interactions versusab initiononlocal correlation effects in the thiophene-Cu(111) system

A Toolbox for Controlling the Energetics and Localization of Electronic States in Self‐Assembled Organic Monolayers

Role of alternance symmetry in magnetoconductance

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